The Bottleneck on Coaching

I wonder with the bottleneck on coaching is how much information coaches can pass onto their players. It's easy to say that stuff in retrospect, but then you hear what coaches actually say to their players mid matches. Like no coach is ever going to say that to a player in the middle of the match. I just don't know how much potential there is for very in-depth stuff. But if you have 16 hours to prepare for a match against Jokovic, then I don't think you're going to worry about those specific details. You're going to focus more on your own game.