AA 640 then WN 4400 at Denver
Charlotte → Denver → St Louis
Timetable, Denver time
13:27AA 640 from Charlotte at the gate
14:00WN 4400 to St Louis leaves the gate
33 min apart on the timetable
The last days
AA 640 and WN 4400 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.