@DAudi Those podcasts aren't actually in your collection.
It looks like they are just in your Recently Played list.
Unfortunately, you won't be able to remove a podcast from your recently played section within the Pandora app. In the meantime, we do have this existing feature request created by another community member: Clear Recently Played / Search History
If you're interested in this option, I would recommend upvoting the idea by clicking on the 💙 icon next to the title.
Hope this helps!
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