A1 is injured as a goal is scored. The faceoff is delayed a bit so that A1 can be tended to and gets to walk off the field. When may A1 return to the game?

Ball goes out of bounds off of B1 in front of  Team A bench. Team A coach grabs the ball and tosses it to A1 on the field who is ready to play. What do you do?

Team A head coach requests a timeout with Team A in possession in their attack half of the field. You grant the timeout. Immediately, Team B coach says they have too many men in the attack half. What do you do? What do you do if you count seven Team A players in the attack half?