Think about it guys…The Doctor never saw Oswin’s face. He has no idea what she looks like. Sure, he heard her voice but the likelihood of him actually recognizing it if he ever heard it again is quite miniscule. If Clara turns out to be Oswin somehow…the Doctor doesn’t know what’s in store for her. He won’t have any idea that she’s the one who gets turned into a Dalek. If Clara is indeed Oswin somehow…We’re all in for yet another heart-wrenching companion termination. God help us all.
Oh my goodness, thank you!! :):)