So a few questions surrounding extending one's lifespan and immortality in general have been circling in my head.

Any idea how did Divayth Fyr extend his lifetime? and if Corprus Disease really gives you immortality?

Another question is do you think Neloth is immortal or not? the blight began in 3E 427, and Neloth was alive and already old by then. so if he's alive in the fourth era that means he's around 207 years. of course like i said he was already alive when we saw him in Morrowind. elves live far longer than 200 years so it does make sense that he's not immortal but still be alive, right?

And at last, how did the Dragonborn cure his Vampirism? any idea what that circle that Falion tends to is? as far as ive gathered Falion needed a filled black soul gem to replace the Dragonborn's soul with it, and thus be "reborn"? but how does that remove the vampire effects from the Dragonborn's body?