It does but downloading is buggy and it seems like the position doesn't sync then, which is annoying
In theory being able to listen from multiple devices is nice though
My current setup is to host the audiobooks in a Plex library and use a third party app like Prologue [1] on iOS or Chronicle [2] on Android which both work really well for offline listening and progress tracking.
[1] https://apps.apple.com/us/app/prologue/id1459223267 [2] https://play.google.com/store/apps/details?id=io.github.matt...
I'm seeing other users commenting in particular that its syncing between player devices is much more robust than any other tools offer.