Originally Posted by
Shareholder
UA is notorious for scamming of mileage this way, either with transcons connecting to overseas flights with the same flight numbers (and thus point to point vs actual segment by segment mileage) as well as many of its NRT connections onward to Asian cities.
AA is no AAngel here. Look up AA 68 and AA 931.
AA 68 flies SFO-MIA-MAD and AA 931 flies SFO-MIA-EZE. Both have a change of aircraft.
Flying 931 though deprives 540 miles while 68 is is really bad, depriving 1198 miles. In addition, because there is change in aircraft, there is no seat selection at all until the airport and you can miss the connection of your "direct" flight.