I'm surprised it was a twenty-year grant of trademark for Audacy rather than just five. At least one situation's seemed to go well outside CBS; WTMJ-TV is "TMJ4", and WTMJ is still "Newsradio 620", and they both made clean breaks, while KMOV just changed it back in 1988 after being sold to Viacom I and there's never been an issue between them and 1120.
Meanwhile there wasn't much issue with the WBBM stations in Chicago (which has finished the "Newsradio 105.9" transition without much issue, and B-96 just mentions calls at the top of the hour). And KYW...at least "CBS 3"/"KYW Newsradio" is easy enough to differentiate. Even WCBS is fine with "CBS2", "CBS-FM" and "Newsradio 88" (which feels like it'll be sold off sooner than later with the WINS newsroom merger).
Then you have branding disasters like the LA/SF KCBS situation I mentioned a few pages back, and the WBZ stations with '''three''' different owners (and an FM with headache-inducing sports hot takes a la KDKA). The KDKA mess is a quagmire that can only be fixed with either a format blow-up (not happening) or AM being sunsetted (more likely), while KDKA-FM just kinda exists without a provocative sports format.
And this isn't CBS-related, but Disney just needs to pay off Cumulus already to yank the KGO calls of 810; they in no way should be associated with degenerates talking about betting on Montana State-Glendive vs. Central Tennessee Presbyterian girl's volleyball, and KABC might as well just be sold off to VCY already because it wouldn't even be a good station under Salem. WABC just has too much tradition and differentiation, though (not a station I'd listen to, but at least the billionaire is putting in effort there).