DL 1585 then AA 4407 at Houston
Atlanta → Houston → Miami
Timetable, Houston time
08:46DL 1585 from Atlanta at the gate
13:30AA 4407 to Miami leaves the gate
4 h 44 apart on the timetable
The last days
DL 1585 and AA 4407 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.