so where does XWA Montreal fit into it?

[Kevin Vahey]

I have a hunch but I can't confirm it on the CRTC website that CJAD
stays on daytime power until local sunset in Windsor.

A few years back when the Spinners were on WCCM-800 you could not even
hear the game clearly at the park as CJAD was the stronger signal.
Then around 9:30 CJAD would vanish which would be roughly the time of
sunset in the summer in Detroit.

I don't think CJAD was guilty of forgetting to power down as it was
the same night after night. The worst offender in Montreal of not
going to night pattern was the old CKVL which just destroyed WEEI.