I'm not sure if this has been brought up, but there was a time not that long ago that the network news divisions staffed the news departments of the TV and radio O&Os.
Example: When Chuck Scarborough joined WNBC-TV fifty years ago, he was an NBC News correspondent assigned to the local anchor desk in New York. The same for his predecessors in that role, Jim Hartz and Frank McGee, and others. And if you're old enough to remember, channel 4's newscasts ended with an NBC News production mention and disclaimer.
Over at ABC, Roger Grimbsy, Bill Beutel and Howard Cosell had network responsibilities aside from their WABC-TV duties in the earliest days of Eyewitness News. CBS may have done the same thing, but not to the same extent. We do know that it was CBS News that hired Jim Jensen to the WCBS-TV anchor desk in 1964-65 when the network reassigned Robert Trout to Europe.
Apparently, the O&O newsrooms became independent of the network by the late 1970s. So perhaps in a sense, CBS News and Stations is bringing this form of staffing synergy full-circle.