AA 3402 then LF 7920 at O'Hare
Lansing → Chicago → BKX
Timetable, Chicago time
16:30AA 3402 from Lansing at the gate
13:45LF 7920 to BKX leaves the gate
21 h 15 apart on the timetable, overnight
LF 7920 leaves 21 h 15 after AA 3402 arrives on the timetable: more than half a day, so not a connection we count.