I don't think that's true; it's a realistic theory where the OP/mod made an observation that has merit. While I don't think Josh was concussed after hitting the turf in Q1, he could have been a bit woozy. The hit in the 4th quarter most likely put him into concussion if Josh was in a 'grey area' from hitting the turf in Q1. Wash Josh's shaky performance the first half the result of hitting the turf, nerves and this game being too big for him, or Belichick confusing him? Hard to say and could be a combination of all three.