And speaking of overlaps, they had a major overlap in Sacramento for about a decade between KLVB 99.5 (Now KKFS) and KLRS 89.7 and now temporarily have three with KLVB 103.9. If they take 99.5 and make it Air1, they will actually reduce overlap amongst the other two.
There is certainly some overlap between 99.5 and 89.7, but there is also a lot of population in the market that falls outside one or another. You can totally see how they would determine they need both signals to hit their target.