Theory:SJA television discontinuity and plot holes/The Eternity Trap


 * In Part One, when the Professor is taken, her scream can be heard, but the cameras she is using have no audio, as she earlier uses her radio to talk.
 * The fact that the she used her radio doesn't mean the camera had no audio. If she was still holding her radio button down when she screamed, the sound would have been transmitted back that way.


 * Rani mentions that Haresh has been teaching Luke to play chess. However, in the previous story, there was a chess set in Luke's bedroom.
 * Luke could have been starting learning how to play chess at this point, and bought or was given the set.


 * Mobile phones are said to interfere with equipment, while walkie-talkies do not, however, all hand-held transmitters currently in common use are actually more powerful sources of EM radiation than any mobile phone conforming to current cellular network standards.
 * Possibly the walkie-talkies they were using had some other way of communicating.