AA 1918 then K4 556 at O'Hare
Miami → Chicago → Tokyo Narita
Timetable, Chicago time
23:56AA 1918 from Miami at the gate
16:00K4 556 to Tokyo Narita leaves the gate
16 h 04 apart on the timetable, overnight
K4 556 leaves 16 h 04 after AA 1918 arrives on the timetable: more than half a day, so not a connection we count.