A TV series or film that takes inspiration and characters from another but does not directly continue the story in the manner of a sequel. To be used for question pertaining to the intricacies of spin-offs specifically, not for any kind of question about some spin-off.
Happy Days maintained a fairly realistic bent throughout it's run (I'm not here to debate shark jumping, I promise). Two notable detours from this were Mork and Mindy and Out of the Blue. Mork ...
I've always wondered what the relationship is between Disney's The Rescuers and the TV show Chip 'n Dale Rescue Rangers. Both shows are done by Disney and are about rodents who act as a "Rescue" ...