Perhaps more to the point, if Sephiroth, who had the most Jenova in him of all, needed five years in the mako-crystals of North Crater to rebuild his body - and *still* hadn't finished his legs even then - after falling into the Nibelheim pit, then how come Zack - theoretically assuming he was the man in the pipe, like hell - could rebuild himself so quickly and so well, and yet not get recognised by Aeris?
