TMP saw them both promoted if I recall correctly
TWOK saw Chekov as a Lt. Commander and First Officer............wouldn't you have thought that Sulu would have gotten a XOs job before Chekov??? How did Chekov move ahead of Sulu??? This seemed confirmed as you'd need 3 senior officers to activate the self destruct on the E-nil. Sulu was sent to help McCoy and leaving Kirk, Scotty, and Chekov to activate the destruct. Then, in STV, Chekov was left in command of E-A when Sulu went with the away team. Then, when they returned to the ship, and Sulu began to enter their new heading Chekov told him "you have no authority", which, if he was the senior command officer on the bridge, he would I would assume.
So, at this point it looks as if Chekov outranks Sulu. Ok, I've seen some people get promoted over and past others. But now I get confused again. in STVI Sulu is now Captain of the most advanced and most powerful ship in Starfleet, and Chekov is still on E-A. Sulu never even had to serve as a first officer it seems.
How the hell can this be explained??
![Confused :?](./images/smilies/icon_confused.gif)