robin747,
KAL aircraft have the "pilot response" alarm but it won't come up when you touch one of the monitored switches like MCP controls, CDU's and so on.
Korean pilots often use the offside tuning function on the audio selector panels.
Well, we all know that the offside tuning light should be exinguished and that also became procedure recently....for sure they screwed up the frequencies this way, including guard.
But flying over central Europe for 1:40 without even wondering about the silence?
That's a different story....