UA 5780 then CV 12 at O'Hare
Memphis → Chicago → Luxembourg
Timetable, Chicago time
16:48UA 5780 from Memphis at the gate
14:55CV 12 to Luxembourg leaves the gate
22 h 07 apart on the timetable, overnight
CV 12 leaves 22 h 07 after UA 5780 arrives on the timetable: more than half a day, so not a connection we count.