See if you can find the continuity errors.
You should just watch the Undiscovered Country first because it's a damn good movie.
Yes there are some scenes that are double/repeated/refilmed (10 years later) and there is story taking place during the Undiscovered country that we did not see in the movie and... IN the novelization of Flashback (in the 90s, I had a choice of buying the novelization of Flashback for 4 dollars, or waiting 2 years for the episode to air on the telly.) we actually "see" Sulu g... Well, that would be telling.