The Concept
When you push, buyers pull away. When you pull away, they lean in.
The 'Not' Close is a technique where you verbally disqualify the deal to see if the prospect fights for it.
The Script
"Honestly, based on what you said about budget, I'm not sure we're the right fit right now. It sounds like a spreadsheet might be better for Q1."
Reaction A: "Yeah, you're right." (Great, you saved 3 months).
Reaction B: "No, we really need this because..." (Great, they just sold themselves).