I'm a bit confused how total mileage is calculated:
To redeem a oneworld Multi-Carrier Award, the total mileage credits required in determining the award zone is the sum of the sector distance (between the origin airports and destination airports) of all sectors in the itinerary. The member or Nominee can make a maximum of five stopovers. In addition, two transfers and two open-jaws are permitted.
Does this mean surface sector of open-jaw is counted in mileage as well?