AA 38 then AA 9601 at Heathrow
Miami → London → Dallas-Fort Worth
Timetable, London time
08:15AA 38 from Miami at the gate
13:50AA 9601 to Dallas-Fort Worth leaves the gate
5 h 35 apart on the timetable
The last days
AA 38 and AA 9601 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.