G7 3376 then CV 12 at O'Hare
St Louis → Chicago → Luxembourg
Timetable, Chicago time
17:28G7 3376 from St Louis at the gate
14:55CV 12 to Luxembourg leaves the gate
21 h 27 apart on the timetable, overnight
CV 12 leaves 21 h 27 after G7 3376 arrives on the timetable: more than half a day, so not a connection we count.