You can let the bar sink in to your chest as far as you want and then press. The only issue is you can't let it sink in after the press command. Anyone taking a deep breath after they have 400+ on their chest is in trouble. The breathe needs to be taken before starting the rep to get tight.
I See what your saying. I don't think I explained it correctly above. He just pointed out that I didn't bounce the weight but I could have been flagged for something after the press command was given. I am by no means a power lifter. So I was just trying to relay what he told me