AA 2537 then QF 7552 at O'Hare
Tucson → Chicago → Los Angeles
Timetable, Chicago time
20:15AA 2537 from Tucson at the gate
18:50QF 7552 to Los Angeles leaves the gate
22 h 35 apart on the timetable, overnight
QF 7552 leaves 22 h 35 after AA 2537 arrives on the timetable: more than half a day, so not a connection we count.