Import other podcasts into iTunes U?
I would like to take advantage of the note taking capabilities of iTunes U when listening to non-iTunes U podcasts. I am using iOS 8.1 on an iPad (4th ten) and an iPhone 5s.
Is there a way to import other podcasts into iTunes U? Or, is there a similar note-taking feature in Podcast or another app that I have missed?
At this point, text notes are fine, but I would prefer audio notes for when I listen to podcasts on my iPhone or cannot easily type. (Even a way of adding bookmarks would be better than me trying to scribble down the time of the important part of the podcast and my thoughts.)
iPad, iOS 8.1