NH 8421 then AA 60 at Narita
Chicago → Tokyo → Dallas-Fort Worth
Timetable, Tokyo time
18:38NH 8421 from Chicago at the gate
17:30AA 60 to Dallas-Fort Worth leaves the gate
22 h 52 apart on the timetable, overnight
AA 60 leaves 22 h 52 after NH 8421 arrives on the timetable: more than half a day, so not a connection we count.