I am well aware that you said there was more than one unique flickr "gallery owner name" in the URL. That is exactly the thing that makes no sense to me. The question is why did the URL contain two "gallery owner" names, when all I did was copy and paste the URL in the exact same way I did with the other images.
Ok, I'll try again:
"Unique gallery owners found among all the separate Flickr URLs found in the post."