DL 1605 then AA 660 at Detroit
Washington → Detroit → Dallas-Fort Worth
Timetable, Detroit time
12:32DL 1605 from Washington at the gate
19:24AA 660 to Dallas-Fort Worth leaves the gate
6 h 52 apart on the timetable
The last days
DL 1605 and AA 660 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.