AA 6189 then AA 1998 at LAX
Denver → Los Angeles → Chicago O'Hare
Timetable, Los Angeles time
09:20AA 6189 from Denver at the gate
13:35AA 1998 to Chicago O'Hare leaves the gate
4 h 15 apart on the timetable
The last days
AA 6189 and AA 1998 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.