I have looked it up. My understanding is that if I talk to Daero after killing the demon, I get either some defense experience or a lot of defense experience (as well as experience in other stats). I was simply looking for confirmation that if I accidentally engage Daero in a conversation after the quest, I could walk away / exit the convo without getting the experience. I guessed that I could, but just wanted to check. Yes you can just walk away it's actually a pretty long conversation about the 10th squad elite you have to take before you actually get the exp and when you reach the part of getting the exp you'll have to choose between def and hp or str and att and even than you can still walk away with no exp.