AA 151 then LF 7920 at O'Hare
Paris Charles de Gaulle → Chicago → BKX
Timetable, Chicago time
15:50AA 151 from Paris Charles de Gaulle at the gate
13:45LF 7920 to BKX leaves the gate
21 h 55 apart on the timetable, overnight
LF 7920 leaves 21 h 55 after AA 151 arrives on the timetable: more than half a day, so not a connection we count.