I was just wondering since lorkhan got his divine spark ripped out and shot down to nirn and shor and lorkhan are supposed to be the same being but with different races

is it possible for shor or what is left of lorkhan to get the heart back and absorbed it or it become a part of them again will it make the stronger?

and since Sheogorath is the sithis shaped hole in the world and was created when lorkhan's heart was ripped out could he absorb the heart and if yes will he get stronger.

sorry if this sounds like a stupid question but I just wanted to know is it possible or not.

Maybe, but I think Lorkhan getting his heart back would make the world unstable, so he would either have to sacrifice himself or let someone do it to him again, or this kalpa would end and he'll have to recreate the world, again. And the Shivering Isles might disappear for a short time (or a very long time - time is a strange thing in SI). If not, at least Sheogorath would have to step down from the throne, since Arden-Sul is returned. I don't think Sheogorath could absorb the heart. He probably doesn't have a hole on his chest. He is the hole.

In at least one version of events, Lorkhan did regain his Heart briefly during the Battle of Red Mountain.