Some days, nobody dies at all. Now and then, every once in a very long while, every day in a million days, when the wind stands fair and the Doctor comes to call, everybody lives.” You’re now ...

A Time corridor? Not quite the Time Window that UNIT HQ has in "Legend of Ruby Sunday" — something we've seen before in "The Girl in the Fireplace" and "The Day of the Doctor" — but close enough.

Keep in mind, it's been over a decade since her appearance in "The Day Of The Doctor," i.e ... some of their fond memories of the best Doctor Who quotes these two had during their short run.