JagoAndLitefoot wrote: It means that only the stories from "Worlds..." are set in both continuities, but otherwise they are separate.
That doesn't make any sense from an in-universe POV. When you listen to it, you're necessarily listening to part of a fictional universe which contains all the previous releases in the ranges involved. Are you trying to say that there's a Doctor Who universe that exists only as a subset of the greater Doctor Who/Dorian/Holmes universe? That's just canonism, and is still nonsense in-universe.