It's probably some adjunct teaching, while the tenured faculty sit at home and fill out grant applications.

My buddy is in this position. The university forces him to show up and deliver an in-person lecture for the undergrads. After a few weeks the students figured out that the lectures are streamed anyway, so it's easier to just watch it at home and there's a lot of lecturing to an empty room.

The grad students still show up to seminars though.