Quote Originally Posted by Grayve View Post
Yeah, 10 is confirmed to be related int FFX-2. Shinra, one of the al behd, is confirmed to be the ancestor of the founders of Shin Ra corporation in FF7. They are not the same world, though, as the FFX world eventually settled other planets via space travel some point in it's distant future. Or FF7's distant past.
I wouldn't take a tongue-in-cheek comment made by Yoshinori Kitase during an interview as 'proof' of that though - it's never been confirmed in any official capacity either in FFVII's Compilation or FFX itself - the character Shinra and his comments about 'planet energy' and 'building a city that never sleeps' is just the same sort of thing as the Ascians having the names of the Scions of Light from FFXII - a name reference for fanservice and nothing more.

The fact Kitase joked about it during that interview shows even he didn't take the idea seriously and was just having a laugh at the interviewer's expense at actually considering such a ridiculous idea.