AA 4915 then QF 7552 at O'Hare
Lexington → Chicago → Los Angeles
Timetable, Chicago time
19:59AA 4915 from Lexington at the gate
18:50QF 7552 to Los Angeles leaves the gate
22 h 51 apart on the timetable, overnight
QF 7552 leaves 22 h 51 after AA 4915 arrives on the timetable: more than half a day, so not a connection we count.