food STARTS coming in 6 minutes. That could mean a basket of rolls and some olive oil for dipping. Or maybe they have all the salads pre-made so they can whip out the salad course.
Six minutes sounds about right to me, if the food is not complex. Try using a stopwatch next time you're in a restaurant. The service industry is pulling some pretty amazing stuff, all the time.
Maybe this is a cafe/snack place of some sort
It's a good story and it gets the idea right, but I would like to see this measured further.