I have looked over everything and I can't figure out why your two episodes aren't displaying within iTunes. I subscribed to the feed to test that way, and the episodes still aren't showing. I can't see anything in the feed that'd be causing this.
It's my understanding that you were already advised by another member of the support team to contact Apple directly about this matter. Just in case, I'm going to post their contact link here as well. You'll need to click the "Contact us" link at the bottom of the page:
http://itunespartner.apple.com/en/podcasts/overview