KOST is AC and KBIG is Hot AC in LA, and both can be in the top 5 at the same time, along with Adult CHR KIIS!
KIIS is considered adult CHR these days? Though not recently, I've heard all three of those stations, and to me they sound enough different to me that there might be some people that listen to all three but they all have an audience of their own as well. From what I've heard of WALK and WKJY, they both sound extremely similar, so how exactly do they not cannibalize one another?