DL 1605 then AA 6486 at Detroit
Fort Lauderdale → Detroit → Chicago O'Hare
Timetable, Detroit time
15:54DL 1605 from Fort Lauderdale at the gate
16:37AA 6486 to Chicago O'Hare leaves the gate
43 min apart on the timetable
The last days
DL 1605 and AA 6486 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.