AA 2500 then G7 3376 at O'Hare
Nashville → Chicago → St Louis
Timetable, Chicago time
17:25AA 2500 from Nashville at the gate
11:00G7 3376 to St Louis leaves the gate
17 h 35 apart on the timetable, overnight
G7 3376 leaves 17 h 35 after AA 2500 arrives on the timetable: more than half a day, so not a connection we count.