UA 5516 then CV 12 at O'Hare
Grand Rapids → Chicago → Luxembourg
Timetable, Chicago time
18:49UA 5516 from Grand Rapids at the gate
14:55CV 12 to Luxembourg leaves the gate
20 h 06 apart on the timetable, overnight
CV 12 leaves 20 h 06 after UA 5516 arrives on the timetable: more than half a day, so not a connection we count.