Board Thread:General Discussion/@comment-25536775-20170510235618/@comment-5679696-20170511023630

DracoWombat wrote: Killian Jones wrote: We don't know that. Anything could have happened. Carlyle is confirmed in 6x21 and 6x22

That does not confirm that his heart wasn't used to cast the curse. Gold could have half a heart inside him or living on without a heart because who knows. Carlyle could be playing somebody glamoured as Gold, or a vision/dream of Gold, either cos he left a message or he is the Darkness inside a new Dark One's head. Or it could be flashback only.