AA 1398 then AA 747 at Seattle
Philadelphia → Seattle → Dallas-Fort Worth
Timetable, Seattle time
21:22AA 1398 from Philadelphia at the gate
05:10AA 747 to Dallas-Fort Worth leaves the gate
7 h 48 apart on the timetable, overnight
Seattle’s board gives a departure time for only about 56% of its flights, so many days show no gate time.
The last days
AA 1398 and AA 747 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.