River also made a comment about the TARDIS light, and asking the Doctor if it needed to be changed. It's like the Christmas references. Never ignore a coincidence. Unless you're busy, then always ignore a coincidence.
I LOVE CLARA THEORIES! Roses and red-coincidence? I believe there are no coincidences in Doctor Who.what if Clara is Ten's and Roses daughter, and being one-fourth Time Lord, she regenerates in spirit but keeps the same body?
How Marvel smuggled Doctor Who into the Avengers. Not sure if it's real as I don't read the comic books. But still fun to think about it! <----- if I worked at Marvel that would be me: sneaking characters from other fandoms into the background