AA 2602 then NH 8407 at LAX
Boston → Los Angeles → Tokyo Narita
Timetable, Los Angeles time
17:50AA 2602 from Boston at the gate
17:13NH 8407 to Tokyo Narita leaves the gate
23 h 23 apart on the timetable, overnight
NH 8407 leaves 23 h 23 after AA 2602 arrives on the timetable: more than half a day, so not a connection we count.