Here's what I do:
1. Hop in the car and buckle up.
2. Reset the FCD trip meter "A".
3. Start up, slowly climb a slight 350 foot dirt path to the main subdivision road.
4. The road out of the subdivision is a half mile long and a slight downhill so I pop it into neutral from the driveway, let it idle and roll down to the stop sign and get a little regen on the way.
5. My next 3 miles is almost constant gradual uphill and I keep off the Assist as much as possible and can usually manage the FCD between 40-60.
By that time 3-4 minutes have passed.

There isn't more than 5-7 seconds where my car's engine is running and not moving. (About the time for AutoStop to activate)

Efficient drivers do it better.
1003 miles a tank personal record. 74MPG calculated. HCH1 CVT