Talking about quarterback battles from an outsider perspective is a little stupid.
I’m not in practices, so I have no idea what things look like on a day to day basis. In the end, you’re somewhat forced to trust the coaching staff’s decision until the bullets start flying when the season gets underway. The problem is, coaching staffs pick incorrectly in quarterback battles all of the time and either make a game changing switch mid year that comes too late (USC with Sam Darnold and Max Browne) or let one get away that outperforms the guy you’re left with (Justin Fields, Joe Burrow, and Malik Willis).