So presuming a 12 hour pit-stop they should be about to start Leg 4? Wonder where they will head too.
They rarely have a 12 hour pitstop these days. They check the transportation schedules and make sure production catches earlier flights, ferries, trains etc. Then they ensure that the teams end up traveling bunched up together. So, it might be 12 hours, could be 19 hours, could be 22 hours and 18 minutes.