You were listening to "Jukebox Saturday" with Tony Michaels.
Both of these stations are owned by Renda Broadcasting, doing business as "The St. Pier Group", based in Indiana, PA. Renda bought WDAD in 2003, having acquired WCCS the year before, along with their two FMs, WQMU and WLCY, respectively. Then he bought Greensburg in 2006, I believe. Jukebox Saturday had for years aired on WLCY, and then it went country. WHJB-FM (it was called WGSM when I was there) then went from urban under Sheridan to Variety Hits using Jones' "SAM" Simply About Music satellite format.
Jukebox Saturday has been on the air since 1988 and makes a HUGE amount of money for a weekend oldies show. Having aired on WLCY, it had the benefit of airing in two radio markets, Pittsburgh and Johnstown. When Renda made the decision to move the show to 107.1, they ran the risk against advertiser backlash by taking it out of Indiana County. So they simulcast the show on WDAD. It's the only time they simulcast.