That all makes sense, but what I was saying is that it doesn't make sense to me that he got promoted to the rank
of Captain and then got bumped back down to Commander. I'm not talking about the position
of Captain, just the rank.
We've seen from the TOS movies that you can have more than one person of Captain rank serving aboard a starship. By the time of the TOS crew's assignment to the Enterprise
-A at the end of TVH, you had Kirk, Spock, and Scotty all holding the rank of Captain even though only Kirk actually was in command of the ship. So why couldn't Riker have retained the rank of Captain but still been first officer?