That DFW affiliate has quite a reach, I could hear it right on the Canadian border in northeast Montana. Before internet streaming become popular, I relied on AM night time skip to hear such programs as C2C. Either WBAP out of DFW or KFAB out of Omaha were two stations I could hear Art Bell quite well at night.
Coast to Coast AM was last carried by 570AM KLIF in Dallas - Ft Worth. That was three or four years ago. Maybe even longer.
It wouldn't surprise me that WBAP carried the show when Art ran it. Most of the shows they carry are first-rate.