AA 3337 then K4 556 at O'Hare
Nashville → Chicago → Tokyo Narita
Timetable, Chicago time
21:59AA 3337 from Nashville at the gate
16:00K4 556 to Tokyo Narita leaves the gate
18 h 01 apart on the timetable, overnight
K4 556 leaves 18 h 01 after AA 3337 arrives on the timetable: more than half a day, so not a connection we count.