Audio problem: Pay close attention to the scene in Round 2 where Apollo says, "Okay, get your cameras ready.he's goin' down.". If you look at Apollo's mouth, even though he is wearing a mouth-guard you can tell his lips don't match him saying that.
Audio problem: Right at the start of Round 2 just before Apollo is about to come out of his corner, his manager yells "Stick and move, stick and move", but it is plain as daylight his lips don't match what he is saying.
Answer: The exact date of the rematch between Rocky Balboa and Apollo Creed is never mentioned, however it is known to have taken place in November of 1976. Rocky, Jr. was born on November 5, 1976. It is not clear how long Adrian was in a coma after Rocky, Jr.'s birth but it can be assumed to be at the very least several hours. It could be as long as a few days. It's long enough that several people tell Rocky he should go home and get rest but he refuses. So at the most, Rocky only has about 3 weeks to seriously train for the fight assuming the fight is held at the very end of November. If the fight is closer to the beginning of November, it could be as little as a few days.
BaconIsMyBFF
The fight was on Thanksgiving. Apollo says it in the press conference.