You assume correctly. I don't share my accounts.
This is a secondary view only account I created just for Channels DVR.
I also don't stream with anything besides Channels DVR TVE.
It appears that Channels DVR either isn't closing connections it opened or is opening/closing them too fast.
If you look at the log I posted you'll see many of these (which I assume needs an open connection) with no corresponding open/close connection associated with them.
[HLS] Couldn't generate stream playlist...
[HLS] Stopping transcoder session
Also, this connection never shows it was closed
2021/03/28 17:45:58.097712 [TVE] stream timestamps: diy: start_at=2021-03-28T17:45:41-07:00 current_at=2021-03-28T17:45:55-07:00 end_at=2021-03-28T17:46:00-07:00
2021/03/28 17:45:58.097889 [TNR] Opened connection to TVE-Comcast_SSO for ch6108 DIY
2021/03/28 17:45:58.099819 [HLS] Starting transcoder for channel 6108 from 192.168.1.8 (encoder=remux, resolution=, deinterlacer=, bitrate=5700)
2021/03/28 17:45:59.215146 [HLS] Probed live stream in 1.11497797s: h264 1920x1080 progressive 5310171bps
2021/03/28 17:45:59.281014 [HLS] Session ch6108-dANY-ip192.168.1.8 started in 1.335944763s
Which was followed by this
2021/03/28 17:46:02.537301 [TVE] stream timestamps: diy: start_at=2021-03-28T17:45:01-07:00 current_at=2021-03-28T17:45:27-07:00 end_at=2021-03-28T17:45:31-07:00
2021/03/28 17:46:02.537453 [TNR] Opened connection to TVE-Comcast_SSO for ch6108 DIY
2021/03/28 17:46:02.538841 [HLS] Starting transcoder for channel 6108 from 192.168.1.8 (encoder=remux, resolution=, deinterlacer=, bitrate=5700)
2021/03/28 17:46:02.540432 [TNR] Closed connection to TVE-Comcast_SSO for ch6108 DIY
2021/03/28 17:46:05.252887 [ERR] Failed to start stream for ch6108: TVE: 403 You've exceeded the maximum number of streaming sessions. To watch this program, sign out of one of your other sessions, and try again.: stream limit reached
So if my assumption is correct, Channels DVR opened 6 streams and I think the limit is 5 based on being able to use 5 devices simultaneously.