DL 2804 then NH 11 at O'Hare
Boston → Chicago → Tokyo Narita
Timetable, Chicago time
21:51DL 2804 from Boston at the gate
10:30NH 11 to Tokyo Narita leaves the gate
12 h 39 apart on the timetable, overnight
NH 11 leaves 12 h 39 after DL 2804 arrives on the timetable: more than half a day, so not a connection we count.