 Coleman previously played <unk> Oswald in " Asylum of the <unk> " , though the connection between the two characters is not clarified until <unk> reveals she has an interest in <unk> , a trait that <unk> 's character also had . The Doctor , after meeting <unk> , <unk> replies " those were the days " when she asks why he isn 't staying to get acquainted with her , which are the same words he tells Craig <unk> ( " <unk> Time " ) when Craig comments that the Doctor always wins . The final scenes at the graveyard establish that <unk> shares the same name as <unk> , leading the Doctor to <unk> they are the same person . As seen on her gravestone , <unk> 's <unk> is 23 November , the date Doctor Who was first transmitted in 1963 . 
