UA 4644 then CA 3104 at O'Hare
Boise → Chicago → Shanghai
Timetable, Chicago time
13:12UA 4644 from Boise at the gate
11:40CA 3104 to Shanghai leaves the gate
22 h 28 apart on the timetable, overnight
CA 3104 leaves 22 h 28 after UA 4644 arrives on the timetable: more than half a day, so not a connection we count.