After one of the most remarkable wins of the New England Patriots’ 2007 season, Bill Belichick was unhappy with two of his defensive leaders.

Belichick tore into Tedy Bruschi and Junior Seau in the film room over a seemingly harmless error they made during the Patriots’ 27-24 win over the Baltimore Ravens en route to a 16-0 regular season.

“I was in the locker room after one game. We had just beaten Baltimore. It was me and Junior Seau,” Bruschi said on ESPN on Monday. “It was 2007. … We’ve won the game. Bill comes in. We’re 12-0. … Bill comes in, ‘Hey, Bruschi. Hey, Seau. How many years of experience in the NFL do you both have? 50? Look at this read.’ And he rewinds the play over and over and over again. All we did was take a wrong step, a wrong step to our left, and the read was to our right.

“Have we made that read a bunch of times? Yes, but we took a little false step this way and there we were on film going like this the entire way,” Bruschi said, shifting back and forth in his chair to simulate what he looked like on film. “ getting called out in front of the entire team. Me and Junior looked at each other and we sort of laughed at it. Because at that point in your career, you know what the old man’s trying to do. And I think that’s what a lot of players in this locker room need to understand.”

Bruschi arrived on this anecdote while discussing Rob Gronkowski, who is reportedly frustrated with Belichick for nitpicking him on and off the football field. This tension has led Belichick to wonder whether Gronk will be all-in for the 2018 season after the tight end has spent the offseason contemplating retirement, according to ESPN.

“You’ve got to make a conscious decision to be all-in before a season with Bill Belichick, because it’s hard,” Bruschi said on ESPN. “It’s hard to be a player under Coach Belichick with the way he coaches. He will ride you every single day because he wants … to get every single ounce of greatness out of his players.”