Shouldn't Phil (Chapman) have asked someone who actually HAS all the episodes needed, AND has time? I mean, didn't Dave state that he doesn't have as much online time as he used to?
I don't think anyone could get ALL the info needed just by asking people (believe me, I've BEEN in that situation!). In this case, fans only type couples THEY remember and never a complete list, which is obviously what you are looking for.
For such a complete list like ALL the couples from a dance scene, I'd think the compiler needs to have all the clips in his possession, in order to check if the list is complete...
Just my thoughts.