AA 2174 then AA 1466 at Denver
Charlotte → Denver → Chicago O'Hare
Timetable, Denver time
15:17AA 2174 from Charlotte at the gate
18:11AA 1466 to Chicago O'Hare leaves the gate
2 h 54 apart on the timetable
The last days
AA 2174 and AA 1466 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.