AA 2521 then AA 5283 at DFW
Calgary → Dallas-Fort Worth → Brownsville
Timetable, Dallas-Fort Worth time
11:00AA 2521 from Calgary at the gate
14:28AA 5283 to Brownsville leaves the gate
3 h 28 apart on the timetable
The last days
AA 2521 and AA 5283 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.