AA 3790 then K4 556 at O'Hare
Dallas-Fort Worth → Chicago → Tokyo Narita
Timetable, Chicago time
23:00AA 3790 from Dallas-Fort Worth at the gate
16:00K4 556 to Tokyo Narita leaves the gate
17 h apart on the timetable, overnight
K4 556 leaves 17 h after AA 3790 arrives on the timetable: more than half a day, so not a connection we count.