K4 539 then CZ 2502 at O'Hare
Anchorage → Chicago → Shanghai
Timetable, Chicago time
13:30K4 539 from Anchorage at the gate
01:45CZ 2502 to Shanghai leaves the gate
12 h 15 apart on the timetable, overnight
CZ 2502 leaves 12 h 15 after K4 539 arrives on the timetable: more than half a day, so not a connection we count.