BR 642 then CA 1020 at O'Hare
Anchorage → Chicago → Shanghai
Timetable, Chicago time
11:55BR 642 from Anchorage at the gate
03:55CA 1020 to Shanghai leaves the gate
16 h apart on the timetable, overnight
CA 1020 leaves 16 h after BR 642 arrives on the timetable: more than half a day, so not a connection we count.