This will likely be an unpopular opinion but I don't think the first one was a concussion and I think people are kinda overreacting about the one last night. I don't buy that they would trot out their young, injury prone franchise QB if he wasn't actually healthy enough to play, especially for a non-division game early in the season. They're not going to risk that, and besides what coach would actually want a concussed person playing the most important & cognitively demanding position on the field?
With the one last night I know it looked brutal but fencing response is actually super common when you get knocked out, as any mma or boxing fan can attest, and in most cases the person is back on their feet within minutes. I know they have to play it safe with anything head/neck related in the NFL but this stuff happens nearly every week (albeit without 60 slow mo replays) and they usually miss a game or two at most. It's really not out of the ordinary or something I'm overly concerned about, and I have him on a couple fantasy squads. It wasn't a dirty hit so there's no reason to be upset about it from any direction, it aint ballet.