AA 642 then K4 528 at O'Hare
Dallas-Fort Worth → Chicago → Tokyo Narita
Timetable, Chicago time
13:10AA 642 from Dallas-Fort Worth at the gate
07:45K4 528 to Tokyo Narita leaves the gate
18 h 35 apart on the timetable, overnight
K4 528 leaves 18 h 35 after AA 642 arrives on the timetable: more than half a day, so not a connection we count.