AA 506 then G7 3376 at O'Hare
Charlotte → Chicago → St Louis
Timetable, Chicago time
14:30AA 506 from Charlotte at the gate
11:00G7 3376 to St Louis leaves the gate
20 h 30 apart on the timetable, overnight
G7 3376 leaves 20 h 30 after AA 506 arrives on the timetable: more than half a day, so not a connection we count.