AA 6291 then AA 2123 at LAX
Tucson → Los Angeles → Chicago O'Hare
Timetable, Los Angeles time
08:53AA 6291 from Tucson at the gate
13:41AA 2123 to Chicago O'Hare leaves the gate
4 h 48 apart on the timetable
The last days
AA 6291 and AA 2123 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.