AA 9799 then QF 7552 at O'Hare
New York JFK → Chicago → Los Angeles
Timetable, Chicago time
16:51AA 9799 from New York JFK at the gate
18:50QF 7552 to Los Angeles leaves the gate
1 h 59 apart on the timetable
The last days
AA 9799 and QF 7552 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.