AA 5404 then AA 1602 at DFW
Harlingen → Dallas-Fort Worth → Boston
Timetable, Dallas-Fort Worth time
07:27AA 5404 from Harlingen at the gate
12:25AA 1602 to Boston leaves the gate
4 h 58 apart on the timetable
The last days
AA 5404 and AA 1602 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.