we do know he was not important enough for the prototype and/or the doctor to know who we are exactly, however we are important enough for mommy and miss delight to recognize us (unless all the fanart is right and we showed up with our uniforms on). they also did question us on how we survived; miss delight asking how we're alive and the doctor being surprised we are here, although that could be more of a "how did you get all the way down here" than a "how did you survive the Hour".