I didn't say he beamed aboard outside the bridge. You're conflating two unrelated points I was making. I said that permission to come aboard is a request made of the OOD, and the OOD is normally posted on the bridge; therefore it seems possible that a person could board a ship and not make the request until they reached the bridge. You're taking a ritualistic phrase far too literally. It's just a formality. I'm sure I've seen other shows and movies where there was a gap between a person's arrival on board a ship and their official request for permission to come aboard.
I can see him asking permission if he's just been assigned, coming aboard for the first time like McCoy but there's no indication of that.
That is not how it works. Read the link I provided. "Permission to come aboard" is something that you have to request EVERY SINGLE TIME YOU BOARD A SHIP, EVEN IF IT IS YOUR OWN SHIP. If you serve on a ship and want to leave it, you have to request permission to leave; and then when you come back, you have to request permission to board.