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NBCSN shutting down end of 2021

Comcast Xfinity in Houston finally demapped the former channel slot for NBCSN after running the redirect loop for over a week. Have other cable systems also demapped the channel or is something else showing up where NBCSN used to be?
 
Comcast Xfinity in Houston finally demapped the former channel slot for NBCSN after running the redirect loop for over a week. Have other cable systems also demapped the channel or is something else showing up where NBCSN used to be?
On Spectrum (New York), the channel where MSNBC was has the following message:

"Programming on this network is no longer available."
 
On Spectrum (New York), the channel where MSNBC was has the following message:

"Programming on this network is no longer available."
At last, Spectrum (at least in Los Angeles) has demapped the channel formerly occupied by NBCSN as of this past Wednesday. It no longer appears in my EPG nor is it tunable.

Side note: I often wonder if the “Programming on this network is no longer available” slate that shows up on a defunct channel still takes up bandwidth as if it were still an active channel. Can anyone here shed light on whether or not that’s true?

How long it takes for a defunct channel’s former slot to be demapped seems to vary. I once had a government access channel on my system that ceased operations and the aforementioned slate appeared on its former channel number for almost a year before it was finally gone altogether.
 
Side note: I often wonder if the “Programming on this network is no longer available” slate that shows up on a defunct channel still takes up bandwidth as if it were still an active channel. Can anyone here shed light on whether or not that’s true?
If the advisory is an actual video stream it would take up a very tiny amount of bandwidth since it is a static, unchanging graphic. On Xfinity these are usually white text on a black background. Xfinity usually leaves these up for around a week before demapping the channel.
 
Unless it's changed recently Spectrum in Jackson, TN had the this network is no longer available message on several former local channels for years. I get them only on Roku now, so I don't know if it is still that way on their tuner boxes now or not.
 
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