AA 3980 then DL 1334 at Detroit
Chicago O'Hare → Detroit → Nashville
Timetable, Detroit time
16:09AA 3980 from Chicago O'Hare at the gate
20:50DL 1334 to Nashville leaves the gate
4 h 41 apart on the timetable
The last days
AA 3980 and DL 1334 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.