I'm interested to see how in-depth they go here. The KH timeline is a different beast than the Zelda timeline, you can't really pad out an entire half hour discussion based on the chronology of the games alone. As complex as we make the series out to be, and despite the fact that the games have jumped all over the timeline, they're pieced together pretty solidly. No one's debating where BbS, for example, stands in the timeline. Yes, 358/2 Days might be a tad confusing to more casual players given its overlap with the other games, but that overlap is very clearly defined in the game itself--literally to the day.
Even with DDD introducing time travel, it's not like it overly-complicates the timeline (yet anyway). It's the actual time travel mechanic (HOW the characters time travel and the rules by which they must abide) which makes it confusing, but I don't think it hurts the timeline all too much.
So the only way I can think of for them to provide a thorough discussion of the debates over the timeline would probably center on specific events rather than entire games. For instance, there was confusion for some time as to how long Xehanort was an apprentice under Ansem. It was stated that BbS takes place 10 years before KH1, and according to KH1's script, Radiant Garden fell 9 years ago. Yet Ansem said he had nursed Xehanort back to health "some years ago," which would be impossible given that he would have been an apprentice for at most one year. While ultimately I think stuff like that is just a matter of fact-checking error on the writers' parts and/or mistranslations, it did lend itself to some interesting debates.
I guess the problem with this approach is that most of these ambiguities of the timeline are actually focused on the order of events that occur in the gap between BbS and KH1. I really don't think they're going to be examining that even though it's probably what would yield the best discussion. Other than that... I don't know. There are some consistency and plausibility issues when you line up TAV's individual timelines and compare them with each other, and Days also has some issues (for instance, if the official timeline is to be believed it would suggest that Sora went through the first 11 floors in 2 days but took 3 weeks in the final 2 floors lol). Again, though I don't think they'll go into any of that, so I'm interested in how they'll approach this.
I'm so sick of people saying Xion was a Replica of Roxas, when she was supposed to be one of Sora. Silly KH wikipedia messing that up. LOL.
Oh man, forgot about this. That originated from misconceptions about what Axel said in one of his secret reports.