Serpent's Trench Map

I'm referring to in the event code... "Magitek in Snow" uses the code $AA, and "Minecart" uses the code $AE... but yes, it seems like the battles were programmed as part of the cutscene itself. It's all in that 1-byte command.

There's actually an interview out there where one of the developers says that the Minecart scene is the most disappointing thing they made... they were probably in a rush at a time, and did a sloppy job.