Hulk before banner got blasted by gamma radiation was bruce banners imaginery friend when he was a kid...Hulk therefor is not a true name...and savage hulk has no idea who banner is...until later but still doesn't see himself as banner...as for banner no longer being on human terms...i believe i read a statement saying that banner is a paradox persona...the hulk and banner are just fighting for dominance for a body that doesn't quite exist on sensible terms...like grey and professor and devil and guilt...all real yet at the same time not real...hulk is complex