It's no secret.
Belichick has talked for years about the things a team has to plan to do differently during a Super Bowl and the week leading up to it. He's talked about the weird game start time, not 1, not 4, not 8 or 8:30 but 6:37. He's talked about the wait during half time. I guess Quinn didn't listen to the Master.
This year alone, the Pats didn't arrive until Monday, getting in a full practice day on Sunday and then getting to Houston just in time for the media night on Monday. Killed two birds with one stone with that one. Used up a wasted travel day with the "departure ceremony" and got one of the big media events out of the way at the same time. Then he gave the team off on Tuesday, as though it were just another week during the regular season. He had them in a rhythm from the beginning. On the other hand, the Falcons arrived on Sunday, killing that day. Then they hung around on Monday waiting for the media night, another wasted day. Two wasted days instead of one. Then they got out of their routine by practicing on Tuesday.