AA 2506 then CA 8414 at O'Hare
Dallas-Fort Worth → Chicago → Shanghai
Timetable, Chicago time
22:30AA 2506 from Dallas-Fort Worth at the gate
20:45CA 8414 to Shanghai leaves the gate
22 h 15 apart on the timetable, overnight
CA 8414 leaves 22 h 15 after AA 2506 arrives on the timetable: more than half a day, so not a connection we count.