Guiltythree
well they're standing above the swirling abyss of the river of time, of course time must be looped. There's even a possibility that Effie and Jet have been stuck in the same loop for a year, living the same moment again and again. that would explain how Jet is still alive despite the lack of essence to absorb
So, little curious theory here. we are currently seeing Jet's tramsformation into mist --- which is so cool and better than what I had envisioned --- but when we saw the Mad Prince, he was more like an older Sunny during the dream, which leads me to wonder: Who else thinks Sunny, in his transformed and defiled state, absorbed Nightmare and took his ability to walk in dreams, and that's the only place he can freely think and be his human self.