In case it’s helpful for anyone, here is a video I made for another writing community. I show how I use Aeon Timeline and Scrivener together. It’s unrehearsed and unpolished, but I hope it adds something to the discussion.
Just to be clear, I’m not advocating for or against anyone using Aeon Timeline–it’s not for everybody. For me, though, it’s been a game changer. Using it, I can track story beats (in my case, the Save the Cat! beats), characters, objects, locations, magic system, B story, character arc, and much more.
Oddly, I do not think of Aeon Timeline so much as a timeline system (though it is that). Indeed, I rarely look at the Timeline view. Rather, I spend most of my time in the Narrative/Outline views for scene discovery and tracking, and the Subway and Relationship views for looking at my story from any conceivable perspective. I think of it as a master-level story discovery and tracking system that lets me look at my story from every important aspect.
Is there a learning curve? Well, sure. For me, it was well worth the time spent understanding what it can do for my novel writing.