AA 1979 then UA 3756 at LAX
Chicago O'Hare → Los Angeles → Tucson
Timetable, Los Angeles time
08:22AA 1979 from Chicago O'Hare at the gate
10:15UA 3756 to Tucson leaves the gate
1 h 53 apart on the timetable
The last days
AA 1979 and UA 3756 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.