USAir played with the times so often I doubt they knew what they were capturing. First it was doors closed, brakes released. Then they added oil pressure. Then it got changed again at one time so that you had to show movement on the IRSs. Then it got changed again so that if you pushed, started but didn't get to taxi, the times were adjusted. Also, if you were held off a gate on landing, same hijinx. It was typical of their attitude.