K4 556 then NH 803 at Narita
Chicago → Tokyo → Singapore
Timetable, Tokyo time
21:48K4 556 from Chicago at the gate
17:00NH 803 to Singapore leaves the gate
19 h 12 apart on the timetable, overnight
NH 803 leaves 19 h 12 after K4 556 arrives on the timetable: more than half a day, so not a connection we count.