As someone who has had over a dozen serious TBI, you are indeed lucky that they did not find any hematoma, I may have glossed over if you mentioned a concussion being found by the exams.

Be patient. Even with none of that, you will probably be forgetful about the points your talking about and forget words. Head injuries are notorious bleeders. So that is not surprising.

You didn't dodge the ball, but you dodged the worse of it. Heal well.