A big part of game management is to control the level of physicality. In the first exclusion, the defensive moves were over the top and could easily be a MAM or Misconduct. The second could be a MAM and maybe misconduct. The hard stroking technique looked more like a strike or bunch attempt from the camera angle. It's so important to stay on top of the game and make sure the message is clear to the players, player safety is a top priority. I don't see many referees use a MAM (Minor act of Misconduct) which is a good tool at their disposal. The player is excluded for 20 seconds and if they receive a second MAM in the game they are excluded for the remainder.