No, 7 passes isn’t anything you can learn from.
I agree with you that this game is meaningless as are all preseason games, at least when it comes to the standings. They are meaningful in gaining real game time(ish) reps, which he needs in heaps. My point was either put him out there and get them now, or wait for when the games do in fact count.
Also, joint practices are for everyone other than the QB. They get to throw against other dbs but it still isn’t live reps.