Thanks CatBus!

No worries about the delay, as attempting to get the DVDs with subtitles has always been tertiary to almost everything else at which I have already succeeded.

Now that I have a few more details, I’ll see how far that gets me!

Incidentally, if I follow the procedure above, will the chapter stops be preserved?

If not, after merging, extracting, and remuxing the new VOB files, is there a way to re-add the chapter stops?

Possibly similarly to the way mkvtoolnix can edit chapter stops on MKVs?

Thank you again!