At the start of the second half there was a delay after Indy kicked off to New England. The refs switched a ball out and then went on with the game. That had to be it. Phil Simms stated he thought there was still a kicking ball on the field and that was the delay, but he was clueless. It makes sense as the heavy precipitation was coming in in the second half and the pats could have deflated the ball at halftime.