Actress Gina Carano (formerly on the Mandalorian) sued Disney for firing her from the show in response to her political views. The district court denied a 12(b)(6) several weeks ago. Yesterday the court denied Disney's motion to certify under § 1292(b). A nice illustration of the analysis of that question, especially for what qualifies as a question of law.
Query whether Disney attempts mandamus. It is not implausible--Disney's basic argument is that it is an expressive organization and thus has its own First Amendment rights that it can protect by deciding who acts in its (inherently expressive) tv shows.
Lesson: It is not so simple as finality.
