GF, at no point have I said the crew violated anything. Indeed I've been trying to get somebody to post the relevant FARs. As of now nobody has.
Also , nobody, not even the TRACON chappy new why the controller wasn't able to reply. It could have been something worse than what actually transpired. Might have been wise to find out before they landed. As it is he woke up, what, 15 minutes later? Was there really any need to rush?
PA, they hadn't lost comms had they. They were still able to talk to the approach/area controller. What would you have done had you landed and then required emergency services? Waited for sleepy to wake up?