Jim Boylen is awful.
Bulls started the game down 17-0, he pulls all 5 starters 5 minutes into it. That's fine on the surface, but everything was dropping for the Celtics and the Bulls were getting good looks that just weren't falling.
Then in the second half, the Bulls are losing the quarter by a score of 5-3, everything seems normal, and Boylen pulls everybody again, this time after about 2 minutes. Great way to lose a locker room before you've even won it over. They never saw the floor again, the starters played 7 minutes + whatever they got in the 2nd quarter. The bench was much worse.