Theory:Doctor Who audio discontinuity and plot holes/Legend of the Cybermen


 * This story effectively decanonises the entire Big Finish Doctor Who(and related eg. Counter-Measures, Gallifrey etc.) output. The Land of Fiction in The Mind Robber was a dream that the Second Doctor had. It only existed inside that dream. Yet here, characters from Doctor Who travel to the Land of Fiction as though it is a real place. Yet it is only a real place in a dream. meaning that this story, and by extension all the stories it links into, and all the stories those link into, and all the stories those link into etc. are all just a dream. In fact, the only Doctor Who(and related) Big Finish stories that are ultimately NOT just part of a dream are the Unbounds.
 * Actually, the Land of Fiction was also portrayed as a real place in the Virgin New Adventures. The idea that the Land of Fiction was just a dream was merely one interpretation that the NAs effectively debunked. So no, this story does not "decanonise" anything.