AA 2363 then 7L 4871 at O'Hare
Denver → Chicago → Houston
Timetable, Chicago time
16:00AA 2363 from Denver at the gate
20:307L 4871 to Houston leaves the gate
4 h 30 apart on the timetable
The last days
AA 2363 and 7L 4871 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.