Dead-air in CH´s 3330kHz, 8/23/2022, 04:38UTC.

Strange, but with less lightning crashes trashing HF, I passed the memory channel that I have CHU´s 3330kHz programmed on, only to see that it was dead-air. Nice +S9 signal, but just dead-air. 7850kHz sounded fine. What´s Trudeau doing up there?