The physics version was much more mathematical, and did things like solving everything in spherical coordinates. It also kind of served as a preparation for solving corresponding problems in quantum mechanics.
The engineering version was more nuts-and-bolts, covering things like transformers, motors, and transmission lines. (Antennas were for a later course).
As a consequence, teaching the engineering course required me to quickly learn a whole bunch of stuff that we glossed over or ignored in the physics course. While also teaching it. Fortunately I was an experimental physicist and had also done some work in industry, so the topics weren't utterly unfamiliar.