I recently did the guildhest with Buso and read that the heist NPC mentioned our lifestream would not take the aether of the hippogrpyhs, leaving the blue flames. This made me consider the dragons. Despite knowing that Midgardsormr's origins are vague, it's at least hinted he came from a different setting to our own. This in turn made me wonder... does our lifestream accept a Dragon's aether? Dragons are not native to our Hydaelyn, but if they came from another planet/star/ what have you, does the lifestream then function as a system of the entire universe, not just our planet of Hydaelyn?

I apologize if I missed some information somewhere, this has just been a question on my mind for a good minute.