Last I tried to listen to podcasts in Spotify, there wasn’t a way to “mark as watched”. The same goes for listening to audiobooks with Spotify. If I had already read chapter 1, there’s no way to tell Spotify. The lack of such a basic features really turns me off from using the product at all.
iTunes / Apple Podcasts keeps wanting to sort descending by date, such that the newest is on top. That seems really odd to me. I would like my audiobook and podcasts in chronological order with the oldest (first) at the top and the newest (last) on the bottom.