Y8 7451 then K4 556 at O'Hare
Anchorage → Chicago → Tokyo Narita
Timetable, Chicago time
05:50Y8 7451 from Anchorage at the gate
04:40K4 556 to Tokyo Narita leaves the gate
22 h 50 apart on the timetable, overnight
K4 556 leaves 22 h 50 after Y8 7451 arrives on the timetable: more than half a day, so not a connection we count.