Jimmy Johnson was on Cowherd's show a few months ago and mentioned that he and Belichick talk pretty often (or something like that), so I figured they were friends.
I also think it was very smart that Johnson said that in his coaching days, no one was allowed to call a timeout except him. Not an assistant coach, not Troy Aikman, no one but him. I see teams waste so many timeouts that it boggles the mind. Like when a QB is late getting a play early in the 3rd quarter on a 3rd and 14 and he calls a timeout. So stupid. The odds of converting that are low anyway, and in a close game at the end, timeouts are extremely valuable especially if you are behind by a score and need them to stop the clock so you can the ball back. I am surprised more coaches don't install that kind of rule.