Congratulations on your new job. The new commute is ideal for maximizing mileage. I get similar results on a nearly-identical trip I make often to my rifle range.
However, a good deal of my driving is on urban interstates, and my most frequent trip on them crosses three river valleys, so it's more like a roller coaster than a normal Interstate highway. On this round trip, the speed limit is 65 and my speeds vary from 61 to 69 mph. In order to prevent spending a great deal of time recharging the HVB while getting barely 25-30 instantaneous mpg, I change the speed to keep the ICE running almost all the time. Doing that, I can average about 44-45 mpg roundtrip, but it's a royal PITA, requiring literally constant monitoring of EV function and state of charge.
The very worst thing that Ford ever did to us was the "upgrade" programming of the PCM that occurred in late 2013 when new owners were starting to mumble about class-action suits because actual mileage was worse than EPA figures (47/47 at that time). That update allowed the cars to run in EV mode at speeds far over the previous maximum of 62 mph. What I learned is that these vehicles have no business running in EV mode at speeds over about 60 mph, not even downhill (unless very steep as one might encounter in some mountainous areas). Even on a downgrade at 65 mph, EV driving discharges the battery very quickly, after which one drives at mpg figures of 25-35 mpg for a protracted period of time until the state of charge is high enough to get back over 40 mpg. It's maddening on trips like my Interstate ones.
On your commute, Griswald, as on the trip I describe, our top speeds are low enough that we really can benefit from EV mode on the highway, especially if the traffic is light enough to use pulse-and-glide techniques.
Why, oh why, is there not a way to lock out EV mode on the Ford Fusion Hybrid to prevent its switching into EV mode at speeds I find are too high to use it properly? If there were, I'd keep this car forever. I love it other than Interstate driving. As it is, I'll be exercising my Tesla Model 3 reservation when my number comes up, hopefully early enough to get some amount of federal tax credit.