It’s weird that he’s met the first eight Doctors as the Brigader and nine actors as he was in _” The Daleks’ Master Plan”_ as Brett Vyon alongside William Hartnell.
After recording Minuet in Hell (which was recorded after this one) with Paul McGann, Nick Courtney was asked 'How does it feel to have worked with all eight Doctors?' it came up in an interview he did for Big Finish
No Wonder Adagio îs a Brigadier replacement Who also use some Doctor incarnations personality such as 6th 7th 8th and Inventor one alternate 10th Grant and Shalka also alternate 12th another Grant