AA 2129 then UA 1840 at Miami
Los Angeles → Miami → Chicago O'Hare
Timetable, Miami time
14:33AA 2129 from Los Angeles at the gate
16:50UA 1840 to Chicago O'Hare leaves the gate
2 h 17 apart on the timetable
The last days
AA 2129 and UA 1840 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.