We do extract that information, but often what the TVDB doesn’t match how the episodes are released, thexem fixes that.
For an example using this exact series.
Paw Patrol aired the first episode in a single 30 minute block, but inside that block were two different 15 minute stories (including commercial time).
This release for “episode 1”
PAW.Patrol.S01E01.720p.WEB-DL.AAC.2.0.H264-BgFr actually contains episodes 1 and 2 on TheTVDB due to how they handle the episodes. If Sonarr didn’t use thexem.de when importing you’d end up with only half the episodes in the series.
Not all releases are done this way (such as
Paw.Patrol.S01E01E02.1080p.NF.WEB-DL.DD5.1.x264-LAZY), but there isn’t a system to handle both scenarios and as long as that mapping is active it will override anything directly from TheTVDB.
It may be time to remove the mapping on thexem.de, but that’d be something you’d need to discuss in their IRC server.