There's an argument to be made that, historically, the Specials moniker was inaccurate, as its original purpose was to amalgamate tertiary series content, such as DVD Bonus Features (until that got out of hand). In that regard, the airing network has the final determination of what is or is not part of the series proper. That said, there's a point to be made that not following a set schedule plays havoc with certain programmes, but our primary mission has always been to track series origins, not to function as the EPG side of an automated retrieval system - that people may do so if they desire is inconsequential to our central focus.
Either way, this is at the point where an admin - red title - should make the final call on policy or interoperability, as further discussion without that decision isn't likely to be productive.
Strangers are just the friends we haven't met yet.