AA 423 then 5Y 7143 at O'Hare
Washington National → Chicago → Tokyo Narita
Timetable, Chicago time
21:29AA 423 from Washington National at the gate
10:105Y 7143 to Tokyo Narita leaves the gate
12 h 41 apart on the timetable, overnight
5Y 7143 leaves 12 h 41 after AA 423 arrives on the timetable: more than half a day, so not a connection we count.