"Bob F." wrote

Correct, at least your first paragraph. With respect, I don't understand
your second paragraph without reading into it.

All I was getting at (perhaps incorrectly) that the engine would be running
slightly faster if it were producing power compared to the speed of the
engine at the same throttle setting if the engine was dead. That lower
windmilling RPM should therefore produce a slightly higher MAP.

I would expect that the difference would be nearly unobservable, but
theoretically should be present.

Certainly not enough difference for the student to be able to troubleshoot
whether the engine is still running or not, now that I know what situation
you were getting at.
--
Jim in NC