The short answer
Very little that is dramatic, which is the point. The work that decides the quarter was done in weeks one to four, so the last three weeks are spent removing friction rather than manufacturing deals: legal and security reviews already started, procurement contacts already named, mutual close plans already signed by the customer. Ordinary teams spend the same three weeks discounting, which is why late stage competitive deals close smaller. Two more habits separate them. They protect next quarter's pipeline generation instead of cannibalising it for this quarter's number, because a hero finish that empties the pipe just moves the miss by ninety days. And they refuse to change the forecast in the final week without a customer side reason, since a number that moves for internal reasons was never a forecast, it was a wish.