I'll go first. I think the Conductor is probably some kind of high god or creator deity, and the Notes are the predecessor to people in Aeon. I also think Linne is likely some kind of god that has more influence than she lets on. It seems pretty clear this is some kind of time loop, too. Which makes it easy to assume Linne has something to do with it. But with how tired and lazy she acts, I think it's safe to assume she's just a third party stuck in the middle.