And this was the title displayed many times for it:
Bus-rail link between Ebbw Vale and Newport returns
For some odd reason I spotted it listed about 20 times spread across 7 pages, yet all other feeds brought in seemed OK, no duplicates spotted. Now I'm running my old MyBB Forum (closed to public) bringing in the same 4 feeds also, I just checked that one from Wales and it's listed once only on that forum. So it's not happened there also with that feed item.
Not sure why it was only happening with that particular feed item, but I'm letting you know about it.