If it was time and materials, the helper doesn't get paid as much as the plumber, but does get paid. Also, many places charge travel time, so 2-hours would give them 1/2-hour each end to come and go.
But, what is there would not pass code most places...the rubber coupling is only allowed underground in most places. You are supposed to use the thinner one with the metal reinforcement (a no-hub connecter). Those keep the ends of the two pipes aligned properly.