CV 12 then K4 578 at O'Hare
Anchorage → Chicago → Seoul
Timetable, Chicago time
19:11CV 12 from Anchorage at the gate
18:10K4 578 to Seoul leaves the gate
22 h 59 apart on the timetable, overnight
K4 578 leaves 22 h 59 after CV 12 arrives on the timetable: more than half a day, so not a connection we count.