July 12, 201114 yr i just had a thought, is it possible that the feeling's sora is having as if he's been to hollow bastion before be related to the fact that it was once radiant garden and that since ventus came to radiant garden (who's heart now resides within sora), then sora feels the connection through Ven's heart (which is connected to his heart).
July 12, 201114 yr either that or it could be that the feelings are coming from within Kiari's heart (since kiari use to live in radiant garden/hollow bastion) that is at the moment within Sora