AA 1277 then WN 1574 at Denver
Chicago O'Hare → Denver → Nashville
Timetable, Denver time
13:47AA 1277 from Chicago O'Hare at the gate
17:25WN 1574 to Nashville leaves the gate
3 h 38 apart on the timetable
The last days
AA 1277 and WN 1574 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.