Module 5 — Measurement and Operations · Lesson 5.1
The Funnel and the Handoff to Sales
Lead definitions, a service-level agreement, and the black hole where most leads disappear
What you'll learn
- Define funnel stages and the criteria for moving between them, agreed by marketing and sales
- Explain the 'sales lead black hole' and the organizational factors that reduce it
- Write a marketing-to-sales SLA with response times and feedback obligations
- Compute stage-to-stage conversion yourself and use it to find the real bottleneck
Marketing and sales usually disagree about leads. Marketing says it sent plenty; sales says they were rubbish. Both are often right, and the argument persists because the two teams never agreed what a lead is, what happens to one, or how quickly. The handoff is a process, and like any process it can be defined, owned and measured.
Two teams, one funnel
Philip Kotler, Neil Rackham and Suj Krishnaswamy's 2006 Harvard Business Review article Ending the War Between Sales and Marketing described the standing tension: sales departments tend to believe marketers are out of touch with what is really going on in the marketplace, marketing has its own complaints about sales, and when results disappoint, each blames the other. They compared the situation to product design and manufacturing, which learned years earlier that consulting each other, rather than throwing designs over the wall, saves time and money.
The practical starting point is a single funnel definition both teams sign. A simple version: a contact (someone who fits the ICP and is known to you); a lead (a contact who has shown interest — replied, booked, requested, asked); a qualified lead (a lead sales has spoken with and confirmed has the job, the authority and the timing); an opportunity (a qualified lead with an active buying process); and a customer. The names matter less than the criteria. Each transition needs a test that two people would apply the same way.
The sales lead black hole
Gaurav Sabnis, Sharmila Chatterjee, Rajdeep Grewal and Gary Lilien studied this in the Journal of Marketing in 2013. Their paper The Sales Lead Black Hole describes the phenomenon in its first sentence: the 70% of leads generated by marketing departments that sales representatives do not pursue, which may result from competing demands on reps' time. Using data from 461 sales reps at four firms, they found that the time reps devoted to marketing leads depended on organizational lead prequalification and on managerial tracking of follow-up, as well as on lead volume and the reps' experience — and that as reps' experience grew, they responded less to managerial tracking and lead volume and more to the quality of lead prequalification.
The implications are concrete. Prequalify leads before handing them over, so reps trust that a marketing lead is worth their time. Track follow-up visibly, so a lead that sits untouched is noticed. And send fewer, better leads rather than more; volume without quality teaches reps to ignore the whole stream.
Speed and the SLA
James Oldroyd, Kristina McElheran and David Elkington's 2011 Harvard Business Review article The Short Life of Online Sales Leads reported research showing most companies were not responding to online enquiries nearly fast enough. Interest decays; a prospect who asked a question this morning is comparing alternatives by this afternoon. The 2025 buyer research from Lesson 1.4 — buyers making first contact around 61% of the way through their journey, with a ranked shortlist already — means that by the time someone raises a hand, they are close to deciding.
A service-level agreement turns these findings into commitments. Marketing commits to the definition of a qualified hand-raise and to passing it with context (what they asked, what they read, which segment). Sales commits to a first response within a set time — measured in hours for inbound requests — and to recording an outcome for every lead within a set number of days: accepted, rejected with a reason, or recycled to nurture. The rejection reasons are the feedback loop marketing needs; without them, the definition never improves.
Measuring the funnel honestly
Compute conversion between each pair of stages over a fixed cohort — of the leads created in March, how many became qualified, and of those how many became opportunities — rather than dividing this month's counts, which mixes cohorts. The stage with the worst conversion relative to what you would expect is usually the real bottleneck, and it is often not the top of the funnel. Doubling lead volume into a stage that converts 10% is a worse investment than fixing that stage.
At small volume, treat stage conversion rates as directional. Ten leads is not a percentage; it is ten stories, and reading the stories behind the rejections is often more useful than the rate.
Make the handoff a system
- 1
Mirror the funnel in Deal Room stages
In /clients, the Deal Room's stages are editable; the defaults are Interest, Verbal, Diligence, Collected (won) and Lost. Rename them to match the funnel definition you agreed, and record the entry criteria for each in /knowledge.
- 2
Turn hand-raises into owned tasks automatically
On /automations, use the email-received or meeting-booked trigger with a create-task action, so an inbound reply or booking produces a task with an owner and a due date matching your SLA. Replies to a cadence already stop that cadence automatically.
- 3
A public request form from /requests lands in the requests inbox. Submissions do not become Deal Room contacts on their own, so assign triage of that inbox as part of the SLA.
- 4
Ask the agent on /ai-agent for the pipeline summary (deal count and amounts per stage, plus weighted totals) and the list of stale deals. Kavanah does not compute stage conversion rates; compute those from your cohort monthly.
Handoff health
- Time to first response
- Median hours from a qualified hand-raise to the first human response. Measured from task creation to first reply.
- Healthy signal: Within your SLA. Our suggested starting SLA for inbound requests is same business day — a recommendation, not a research figure.
- Lead outcome coverage
- Share of handed-over leads with a recorded outcome (accepted, rejected with reason, recycled) within the SLA window.
- Healthy signal: All of them. Unrecorded leads are the black hole.
- Stage-to-stage conversion (cohort)
- For a monthly cohort of leads, the share reaching each next stage. Computed by you from Deal Room data.
- Healthy signal: Read for the worst stage relative to expectation; at small numbers, read the stories, not the percentages.
Key takeaways
- ·Agree one funnel with testable criteria for each stage; names matter less than criteria.
- ·Research found 70% of marketing leads go unpursued; prequalification and visible tracking reduce it.
- ·A hand-raise arrives late in the decision, so an SLA with response times and recorded outcomes is essential.
- ·Measure conversion by cohort and fix the worst stage before buying more volume.
The funnel ends at 'customer', but marketing's work does not. The next lesson covers lifecycle and retention — and the honest debate about how much retention drives growth.
Sources
- 1.The Sales Lead Black Hole: On Sales Reps' Follow-Up of Marketing Leads
Gaurav Sabnis, Sharmila C. Chatterjee, Rajdeep Grewal, Gary L. Lilien · Journal of Marketing 77(1), 52–67 · 2013
70% of marketing-generated leads are not pursued by sales; follow-up depends on prequalification, managerial tracking, lead volume and rep experience (461 reps, four firms).
- 2.The Short Life of Online Sales Leads
James B. Oldroyd, Kristina McElheran, David Elkington · Harvard Business Review, March 2011 · 2011
Research showing most companies do not respond to online enquiries nearly fast enough.
- 3.Ending the War Between Sales and Marketing
Philip Kotler, Neil Rackham, Suj Krishnaswamy · Harvard Business Review, July–August 2006 · 2006
The mutual-blame dynamic between sales and marketing, and the case for working together like design and manufacturing.
- 4.2025 B2B Buyer Experience Report
6sense (vendor research) · 6sense.com · 2025
Buyers make first contact around 61% through the journey with a ranked shortlist — so a hand-raise is late, and speed matters.