AA 1363 then UA 6093 at Houston
Charlotte → Houston → Denver
Timetable, Houston time
09:03AA 1363 from Charlotte at the gate
13:11UA 6093 to Denver leaves the gate
4 h 08 apart on the timetable
The last days
AA 1363 and UA 6093 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.