AA 3498 then CA 1020 at O'Hare
Tulsa → Chicago → Shanghai
Timetable, Chicago time
12:52AA 3498 from Tulsa at the gate
03:55CA 1020 to Shanghai leaves the gate
15 h 03 apart on the timetable, overnight
CA 1020 leaves 15 h 03 after AA 3498 arrives on the timetable: more than half a day, so not a connection we count.