NH 8421 then NH 180 at Narita
Chicago → Tokyo → Mexico City
Timetable, Tokyo time
18:38NH 8421 from Chicago at the gate
16:50NH 180 to Mexico City leaves the gate
22 h 12 apart on the timetable, overnight
NH 180 leaves 22 h 12 after NH 8421 arrives on the timetable: more than half a day, so not a connection we count.