In Glengarry Glen Ross (1992 Film adaptation) Levine follows Williamson out to his car as he's leaving the office. Levine begs for new leads and Williamson refuses him. Next scene is Moss and Aaronow discussing Graff and the leads and they end up at the restaurant, the same restaurant Roma is at and where he makes his sale. If Roma didn't make the sale until after Williamson left the office, how could Williamson have filed the contract?
Reading the play, it appears Williamson and Levine's interaction happens in a booth at a restaurant - so perhaps Williamson being on his way out was a change made for the adaptation? Dramatically and tone wise, it was great, but it doesn't fit with the timeline.
Did I miss something?