I know CBS offers a 3-min TOH cast with 1 min adjacent inventory and a fourth minute of news after that, but I've heard on more prominent stations like KIRO and WKRC (I think) an update from them at the bottom of the hour. Seems like a one-minute deal. I thought CBS affiliates typically took CNN for BOH casts; does CBS indeed offer a status report at :30, and is it cleared with the network?