Officials reviewing their own performances on game film is commonplace. Our crew started doing it in the 1980s. These days with virtually everyone using HUDL, it’s a lot easier. I used to carry a blank VHS cassette to my games, with a self-addressed, stamped mailer, to get a copy of the game video. If I didn’t have it by Wednesday, I’d start making a nuisance of myself. But in 43 yrs of officiating, I’ve never heard of a coach sending video to a crew in advance of a game. In fact, aside from those schools where the AD was also the head FB coach, I don’t ever remember communicating with a coach in the week before a game.