User blog comment:Xiggie/KHL ideas: Timeline/@comment-1153260-20100609004540

As for Xion, if he had her planned for KHIII.... then I'm pretty sure Days would've made sense, regardless of whether it was planned before or after KHII. The ending, however, is something that we already know was planned aeons before Days was released. :P I asked myself the same question for Chain of Memories and I realised that the whole idea for the Nobodies and the OXIII came up when Squaresoft was still Squaresoft - i.e. before the merger with Enix. So now, I'm pretty sure there must've been a reason. Enix didn't go spoil everything.