'Complete CERTAIN questions', not necessarily all is what I read from that. Maybe within a few questions and tests they can flag the rest if the player does well.That what they say in the official blurb doesnt equal what exactly would happen.
Say you have three concussions in a row = how many doctors does a club employ???
I would think its likely an observation period, 'how many fingers am I holding up', check pupil dilation, 'where do you live', 'where are we now', 'close your eyes, touch your nose' etc
I think teams are going to take advantage, if a props been on the field more than 10 minutes they will tell them to stay down if they suffer even the slightest bump. Wait for the doctor, mention a symptom, go off, get checked, back to the bench, free interchange