Why does ganondorf die after zant snaps his neck on Zelda tp?

Zant and Ganondorf share a bodily link, zant was dead at the time but Ganon could revive him - but once Ganon was in Hyrule he didn't need him so he didn't revive him. Once ganon was defeated and about to die, he tried reviving zant so he could bring him back to Hyrule after, but Zant knew Ganon wasn't trying to help him since he could've revived him sooner, so he broke his neck as revenge - breaking ganondorf's neck and their bodily link as well.