Why would they need a switcher in the first place? I have never heard them simulcast programming before.
I beg to differ. A few years ago, during the great station reorganization of 2006, 94.9 (then WPRV-FM) and 96.5 (then WYGY) both broadcast "The Star" country format originally on 96.5. Soon after 94.9 was given to Entercom by Cumulus in exchange for WGRR, Cumulus moved the WPRV calls and the format back to 96.5. That didn't happen immediately - therefore, for a short time (and it didn't have to be very long, it could have even been as little as 5 minutes after the swap), 94.9 was owned by Entercom and simulcast 96.5, which was a Cumulus station. Of course, the "Star" format didn't last much longer, anyway - 96.5 was soon blown up, with the new calls of WFTK, starting the brief "Supertalk" era before becoming 96 Rock as we know it now. 94.9 meanwhile soon saw the launch of the format known as "The Sound" with the calls WSWD and 97.3 was blown up, taking the WYGY calls to run "The Wolf" as it does today.
And as if that is not confusing enough, recall too the numerous swaps between 94.9 and 97.3 when "The Sound" format was still running here.