Having that one stream with all of the stations being identified at the same time was their way of programming it without having to have it fed locally. Initially those HD subs were fed by a NexGen system in each local studio. They've been phasing that out in most cases. WLIT HD2 in Chicago in particular went from feeding it locally to that national stream about a year before they shut the whole thing down.
When they initially started launching these feeds to protect the brand, they were doing it regionally. In Milwaukee, it was on WKKV HD2. At first they were running the same webstream as Madison, and Minneapolis and all 3 stations got an ID at once until they got things up and running on a local level. What they did not realize was there was already a station in the Milwaukee area (Particularly neighboring Sheboygan) called "The Breeze", so they pulled all imaging and just ran the music with a legal ID on the HD2 until they turned it off in 2020. None of this served any purpose other than to prevent companies like Entercom from using "The Breeze" like they did in Detroit.
When they initially started launching these feeds to protect the brand, they were doing it regionally. In Milwaukee, it was on WKKV HD2. At first they were running the same webstream as Madison, and Minneapolis and all 3 stations got an ID at once until they got things up and running on a local level. What they did not realize was there was already a station in the Milwaukee area (Particularly neighboring Sheboygan) called "The Breeze", so they pulled all imaging and just ran the music with a legal ID on the HD2 until they turned it off in 2020. None of this served any purpose other than to prevent companies like Entercom from using "The Breeze" like they did in Detroit.