AA 6291 then G7 3376 at O'Hare
Oklahoma City → Chicago → St Louis
Timetable, Chicago time
15:30AA 6291 from Oklahoma City at the gate
11:00G7 3376 to St Louis leaves the gate
19 h 30 apart on the timetable, overnight
G7 3376 leaves 19 h 30 after AA 6291 arrives on the timetable: more than half a day, so not a connection we count.