Does that mean that the pilot can pull an additional 1.5 MAP over the determined MAP limits when operating with full carb heat?
I agree it does read like that assuming the coffee break experts agree, however it will be a very hard sell to the students which would go along the lines of:
"now lets work out your 5 min takeoff and continuous power limits, and remember they arent really limits, because if the carb heat is out/on you can pull 1.5 inches over the limit"
no room for misunderstanding or confusion at all I think, just wait till they get on a turbine with the "limits arent limits" methodology.