Return to Oz, by the way, is a Disney film, not associated with the iconic 1939 film.
It’s Disney’s unofficial sequel to the iconic 1939 film, hence the title “Return to Oz”. They even went through the trouble of paying an insane amount for the permission to use the Ruby Slippers in their film. But yeah, it’s an unofficial sequel just like Oz the Great and Powerful is their unofficial prequel. I wouldn’t be surprised if future Oz flashbacks include Return to Oz characters such as the Nome King, Princess Mombi and the Wheelers.
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