UA 868 then CV 69 at O'Hare
Tokyo Narita → Chicago → Luxembourg
Timetable, Chicago time
14:50UA 868 from Tokyo Narita at the gate
04:00CV 69 to Luxembourg leaves the gate
13 h 10 apart on the timetable, overnight
CV 69 leaves 13 h 10 after UA 868 arrives on the timetable: more than half a day, so not a connection we count.