AA 1526 then AA 5530 at Houston
Philadelphia → Houston → Dallas-Fort Worth
Timetable, Houston time
15:44AA 1526 from Philadelphia at the gate
16:14AA 5530 to Dallas-Fort Worth leaves the gate
30 min apart on the timetable
The last days
AA 1526 and AA 5530 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.