AA 2515 then QF 7552 at O'Hare
Portland (Oregon) → Chicago → Los Angeles
Timetable, Chicago time
19:35AA 2515 from Portland (Oregon) at the gate
18:50QF 7552 to Los Angeles leaves the gate
23 h 15 apart on the timetable, overnight
QF 7552 leaves 23 h 15 after AA 2515 arrives on the timetable: more than half a day, so not a connection we count.