[For a long moment, there's no reply; just static. Because none of that makes any sense. How could Sora have seen him?

Finally, he does reply and there's something almost contemplative about his voice.]

...Xehanort was my master. I can't really tell you much about what might have happened after I faded but he might have been able to keep part of me alive--or real. Whatever. I don't know why he'd show you who I was, I don't have any clue what his logic is in that. But that's my best guess.