Yes, that's true. If MM is a chronological sequel than it violates the time paradox and the split timeline theory has failed.There has to be a timeline.Then again oot and mm are connected.
Did it say in Majora's Mask that Link was looking for Navi? I thought he was looking for "an old friend" that people presumed to be Navi. I'd like to see some sources that confirm or deny this if it's possible.My main concern is how you can think MM is merely loosely affiliated with OOT. Me being a believer of the split timeline, in the timeline where Link and Zelda are children and warn the king of Ganondorf's intentions, Navi leaves Link and he sets out to find her. This leads directly into the events of Majora's Mask.
Actually Zelda would have ran away from Ganondorf and wouldn't be at the castle, given the 7 year gap that is created when using the Temple of Time. This means that even if Link is conciously aware of what is going to happen, he warped back in a period where the doors to the Temple of Time should have been sealed and wouldn't have been able to even allow him through.And even if they didnt warn anyone about ganondorf, he still would going to find Navi.
The horse you can easly asume he got after he went back to being a kid, seeing as he now knew alot about Epona. ITs not like link forgot his escapade in the future when he went back to being a kid
That kind of logical flaw indicates there is no grand timeline, rather some games with loose affiliations with others.
I'll create a graphic soon to help clarify my arguement on the timelines.