 The episode title "The Girl Who Waited" is a reference to Amy having waited 12 years (and later 2 more years) for the Doctor to return to her in "The Eleventh Hour".When describing the facilities in the Two Streams Facility, the interface says they have a replica of the amusement park at Disneyland on Clom.The planet Clom was first mentioned in "Love and Monsters" as the home planet of the Abzorbaloff and the twin planet of Raxacoricofallapatorius.