Ask your supe what the route plans to for the day. If he says 9.5, you work 9... if that means you put in a 90 minute lunch, that means you put in a 90 minute lunch!
.
Bad advice. Lunch does not figure into your imaginary "planned day" number at all. What OP would need to do is slow down when working to avoid coming in sooner than 9.5 hours (OF WORK NOT COUNTING UNPAID TIME)