AA 440 then G7 3376 at O'Hare
Houston → Chicago → St Louis
Timetable, Chicago time
14:29AA 440 from Houston at the gate
11:00G7 3376 to St Louis leaves the gate
20 h 31 apart on the timetable, overnight
G7 3376 leaves 20 h 31 after AA 440 arrives on the timetable: more than half a day, so not a connection we count.