Re-reading what you said, I think I follow now. And I suspect you're correct, that it's technically possible, with the mechanical transmission engaged, at some particular speed under some particular set of circumstances, the ICE puts out X horsepower (with X < maximum theoretical) through the clutch and the electric motor puts out Y horsepower (with Y < maximum because of the relatively high speed), and X + Y = 212hp. The slight difference between theoretical maximums is probably as simple as that the horsepower curve for the ICE with mechanical transmission (which goes up with speed for the most part) plus the horsepower curve for the electric motor (which drops at higher speeds) peaks at a point where neither is quite at its maximum. Certainly not meaningful in any real world sense, regardless. It is, as noted, suspect that it's the same number as a car with significantly different ICE and battery output capability. I had missed that, so yeah, I take back anything I said about that graph, it's garbage and completely meaningless. This is not really contributing to the discussion here (I'm out of my depth past the theoretical physics of it), but this dyno graph of a Tesla and a Dodge Charger between 0 and 155mph is a much better illustration of why torque and particularly horsepower measurements between an ICE and an EV are a poor comparison at best when talking about how a car drives in the real world. It doesn't say what year Challenger SRT that is, or if the P85D was in its drag-race mode or not, but in any case on this dyno the ICE is peaking at around 640hp and the Tesla at 550hp, but the way the cars will perform is wildly different. From a standing stop through 40mph the Tesla is producing drastically more torque and power so is going to accelerate faster, while at faster-than-highway speeds the transmission in the ICE is keeping it at near-maximum torque and power while the EV falls way off. And of course the ICE bounces around as it shifts (though the torque is quite smooth because this is an extremely high-performance ICE with a very flat torque curve). Basically why Teslas boast preposterous 0-60 times but aren't going to perform at the same level as an ICE with a similar horsepower rating at speeds over 90mph. The Clarity PHEV (and presumably Accord PHEV) will probably look different from this with some sort of discontinuity around 50mph because the mechanical transmission may come into play at higher speeds if you're using the ICE.