I've never seen the movie "Troy" and yet I'm tempted to abscond with it out of the Cineverse and place it in the TV Universe. Why? Because of this movie fail:
Apparently that really is a plane passing overhead during the shot.
So this could be Global Flight 33 from 1961 on its way back to the Jurassic Age or making the return trip to the New York World's Fair of 1939.
And why did this happen? Probably because of the Meddling Monk, one of the Doctor's fellow Time Lords (who needs to make a return visit to the series after being too long gone......)