Option to prevent download of repeat episodes if you've selected auto download of episodes
I do not believe there is an option to prevent the download of "re-runs" or repeat episodes when you have auto download selected for a podcast. Many podcasts repeat episodes to meet their schedule. I recognize that the repeated episodes may not match up perfectly with the original but an imperfect filter would be better than none.
You can filter episodes based on some keywords in their title. By doing so they won’t be displayed in the app, however without this the app cannot know if an episode has already been published or not