If you regularly listen to WGN Radio 720 before Noon, and thought something was wrong yesterday, you would be right as Robert Feder has a report on it 3 article from the top of his Robservations column https://www.robertfeder.com/2019/07/31/robservations-barry-rozner-got-peggy-kusinski-open/ , a router crash happened towards the end of Bill Leff and Wendy Synder's show that happened at the WGN Radio studios which is at 303 East Wacker Drive which lead to 10 minutes of dead air, and then old content was heard from the station's transmitter site in Elk Grove Village. And then another incident happened shortly after 3 PM, which lead them to play part Roe Conn's show from Monday afternoon. One thing it is clear that WGN Radio does not know what happened to have caused this.