Back in the DXing days near JFK Airport of the 60's, WFAS was the dominant 1230 station. But WCMC was detectable a few times under it all, partially on some water-path.
And for a few weeks, WCMC was alone overnight, with its form of easy-listening fare. Usually, when WFAS signed off, 1230 was a mix of WITH Baltimore and WNOR. Yet it was WCMC, all by itself overnight, detected for a week or so.
Thing is : WCMC was still running 100 watts at the time we heard them. That's not a typo.