UA 5613 then CV 69 at O'Hare
Harrisburg → Chicago → Luxembourg
Timetable, Chicago time
15:28UA 5613 from Harrisburg at the gate
04:00CV 69 to Luxembourg leaves the gate
12 h 32 apart on the timetable, overnight
CV 69 leaves 12 h 32 after UA 5613 arrives on the timetable: more than half a day, so not a connection we count.