context: Between May and September 2005, rumors circulated that Disney–ABC was considering a sale of ABC Radio, with Clear Channel Communications and Westwood One (which had earlier purchased NBC's radio division, as well as the distribution rights to CBS's, and the Mutual Broadcasting System during the 1990s) as potential buyers. On October 19, 2005, ABC announced the restructuring of the group into six divisions: Entertainment Communications, Communications Resources, Kids Communications, News Communications, Corporate Communications, and International Communications.
question: What did Westwood One acquire from CBS?