common consensus is Bruce doesn't like him. He certainly didn't like what Bowie did with 'saint in the city' or 'growin up'. When they met at a recording studio Bruce didn't like that Bowie ate lunch away from his band.They've never shared a stage though very few 'guests' appear at Bowie gigs - whether that will alter will be seen. Given a choice (and i know this will surprise some) i'd rather meet Bowie than Bruce.