UA 5500 then CV 12 at O'Hare
Green Bay → Chicago → Luxembourg
Timetable, Chicago time
15:30UA 5500 from Green Bay at the gate
14:55CV 12 to Luxembourg leaves the gate
23 h 25 apart on the timetable, overnight
CV 12 leaves 23 h 25 after UA 5500 arrives on the timetable: more than half a day, so not a connection we count.