The title of the episodes, however, is very consistent. The naming scheme here is {t; }{t}, is there any way to, through expressions, state that I want, for example, episode 1 here to be named s01e01-e02, and to do that in sequence for all of the files where multiple episodes are separated by semicolons?

For example, the file on the right is what all the files in the directory below should look like, relatively.

The problem with this however is that the episode format is screwed from the get-go, because episode 1 is ep 1-2, and ep 2 is 3-4, so there's an exponential offset that filebot would need to ignore.
I don't think I'd ever be able to learn expression coding that is this complex. And I've looked everywhere for an introduction to expressions, I'm a complete noob to this, and would appreciate some help, sorry for the crude and likely cringeworthy display of misunderstanding.