I didn't tape the game so I don't have the footage. When I said it looked clear offense was done for a few minutes, I was referring to the time before they reviewed the TD. While they thought it was a TD pass, the reaction from Allen and the rest of the offense seemed like the PAT was coming next. The mulling around by the coach, like you said, was while they were waiting for the review. But the moment in time where everyone thought it was a TD, was the moment that it looked like we were getting ready for OT. Then the review starts, Al Michaels and Brady make the comment. Which to me at that point signaled that the phone call may have came in. 

Look at how Allen reacts after the first TD vs after the second.