AA 3160 then QF 7552 at O'Hare
Boston → Chicago → Los Angeles
Timetable, Chicago time
20:28AA 3160 from Boston at the gate
18:50QF 7552 to Los Angeles leaves the gate
22 h 22 apart on the timetable, overnight
QF 7552 leaves 22 h 22 after AA 3160 arrives on the timetable: more than half a day, so not a connection we count.