AA 2523 then DL 1709 at DFW
Amarillo → Dallas-Fort Worth → Boston
Timetable, Dallas-Fort Worth time
08:49AA 2523 from Amarillo at the gate
13:10DL 1709 to Boston leaves the gate
4 h 21 apart on the timetable
The last days
AA 2523 and DL 1709 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.