Should have titled this as
"Using Custom Channels to record the same episode more than once on the same or different channels because sometimes recordings are corrupted/pre-empted/wrong episodes/interrupted/... and want to make sure all episodes in the series marathon being aired are recorded because I'd rather look through 10 of the same episode to find one good one to archive."
But that was too long for a post title.
Can I add my Xfinity-TVE channels from my NAS as a Custom Channels source to a Channels DVR-TVE Docker container running on the same NAS?
If so, this would solve my problem of trying to record a series marathon where the TVE recordings get Interrupted. The episodes air once or twice a day and sometimes again on the weekend.
If I can record the first airing on my NAS using TVE and the second airing of the episode later that day on the Docker container, that would work. Most likely one of those two recordings will be un-Interrupted.