UA 5443 then CV 69 at O'Hare
Grand Rapids → Chicago → Luxembourg
Timetable, Chicago time
15:58UA 5443 from Grand Rapids at the gate
04:00CV 69 to Luxembourg leaves the gate
12 h 02 apart on the timetable, overnight
CV 69 leaves 12 h 02 after UA 5443 arrives on the timetable: more than half a day, so not a connection we count.