I would assume, at that level, that in-game adjustments focus upon specific plans of attacks against specific batters.
Pitch calling, location adjustments, mental game, and other strategy whatnot - not mechanical adjustments.
would you agree?
My guess is their discussion focuses on what is working and not working real time, including adjustments to specific hitters and the umpires strike zone. I would also like to point out that the college team pitching coach, usually former collegiate pitchers themselves, work daily with their pitchers. How many HS/TB coaches have ever attend pitching lessons for their pitchers other than their DD? How many are former pitchers?