Regressive investigation

At a presentation on how to make TV programmes out of investigative journalism. The presenter wants to play us a recording of a phone conversation. He tries, but the big TV is showing the wrong input, and there are a few minutes while he and the office assistant fiddle with things to get his laptop screen showing. Finally they manage it, and he clicks the button on his laptop to play the video, which shows two people sitting around an identical laptop. One of them clicks the button on their laptop, and we watch them sitting there, listening to the muffled audio.