The Panopticon/Vienna Salvatori

According to our Vienna Salvatori article, the Vienna audio series is not a Doctor Who spin-off but rather something set in a separate universe with her first appearance being a cross-over with Doctor Who. However, it looks like even Big Finish calls it a spin-off on its own page: [1] "in this brand new spin-off from the Doctor Who main range adventure". The summary, mentioning an Earth Empire, doesn't sound like it's in any way contradictory to the Doctor Who universe, so it doesn't seem to be any more separate than e.g. the Bernice Summerfield or Iris Wildthyme series, which are covered by the wiki.