Under which formats did WLS move from music prominence to talk radio influence?

WLS in Chicago made the big shift from music to talk in two stages. First, it dropped its iconic Top 40 format in the late 1980s and moved to a full-time talk radio format in 1989, focusing on conservative hosts and political discussion. Then, over the years, it evolved into a more general news and talk powerhouse, eventually merging with the FM dial to stay competitive. So, you saw it go from music prominence as a Top 40 giant to a talk radio influence under both a conservative talk and later a news/talk format. Did that cover the transition clearly for you?