UA 3686 then CV 69 at O'Hare
Jacksonville → Chicago → Luxembourg
Timetable, Chicago time
14:29UA 3686 from Jacksonville at the gate
04:00CV 69 to Luxembourg leaves the gate
13 h 31 apart on the timetable, overnight
CV 69 leaves 13 h 31 after UA 3686 arrives on the timetable: more than half a day, so not a connection we count.