DL 1624 then CV 69 at O'Hare
Boston → Chicago → Luxembourg
Timetable, Chicago time
15:27DL 1624 from Boston at the gate
04:00CV 69 to Luxembourg leaves the gate
12 h 33 apart on the timetable, overnight
CV 69 leaves 12 h 33 after DL 1624 arrives on the timetable: more than half a day, so not a connection we count.