Looking at the angles I don’t think Poite can see the point of contact, which makes his conduct worse.
Even if he doesn’t believe there was a penalty for flying-in (it looked like one to my jaundiced eye), he should have gone back to look at the next breakdown as a player welfare concern once potential foul play had been brought to his attention.
It’s wrong to say the Citing Officer can deal with it, if there has been foul play it needs to be punished there and then.
I understand refs want to keep the game moving and not spend time looking at videos of every breakdown but player welfare has to take priority.