I came across something similar this weekend.
TL;DR: I did not add tracks present on the physical medium because they’re not listed on the track listing.
This release has a special DVD with music videos. The DVD has some titles with the 2nd being the main feature. Each title has chapters, wich are the tracks. Each music track is preceded by a track with a spoken introduction. The DVD can be played with and without introduction tracks on a DVD player.
Now to the similarity: If loaded into a ripper, the DVD actually has two more chapters, one at the beginning and one at the end. I considered adding them, but they’re very short. The first is a 11 second intro fanfare the last is actually just zero seconds long.