just a theory but

this is kinda speculation but after seph fell into mako in the bottom of the reactor is it at all possible that he fell in to the lifestream (like cloud did) but in stead of being found just got carried around learning from it before finally being washed up at the north crater?

also i know this ones really stupid and unlikely but is it possible that zack (who was killed by the shinra guards) was revived by his jenova cells (from hojo in the shinra basement) and slowly turned into the sephiroth clone?

i know the last one stupid but is it possible?