To better understand what you're looking for, could you provide more context? For instance:
* Where did you hear this term? Was it in a book, an article, a presentation, or a conversation?
* What is the overall topic being discussed? Is it about marketing, sales, customer service, or something else entirely?
* What is the purpose of this "funnel discussion"? Is it to analyze a process, brainstorm ideas, or something else?
Knowing more about the context will help me give you a more accurate and helpful answer.