"spiritual" connection to TV series worth connecting?

I'd just come across this Kenny Everett TV special, which I'd actually forgotten existed: https://www.imdb.com/title/tt2439334 I've got a copy, so I'll do the cast and crew, etc. this week. But I remember when that aired, and it was during the time when his regular TV show was on air: https://www.imdb.com/title/tt0081883 Although the format was a little different, and less "sketchy", it was regarded as just a Christmas special of the series, rather than something "stand alone". I'm wondering if it's worth making it Episode 3.9 rather than leave it where it is?