AA 3389 then G7 3376 at O'Hare
Columbia Regional → Chicago → St Louis
Timetable, Chicago time
12:00AA 3389 from Columbia Regional at the gate
11:00G7 3376 to St Louis leaves the gate
23 h apart on the timetable, overnight
G7 3376 leaves 23 h after AA 3389 arrives on the timetable: more than half a day, so not a connection we count.