AA 457 then G7 3376 at O'Hare
Washington National → Chicago → St Louis
Timetable, Chicago time
14:15AA 457 from Washington National at the gate
11:00G7 3376 to St Louis leaves the gate
20 h 45 apart on the timetable, overnight
G7 3376 leaves 20 h 45 after AA 457 arrives on the timetable: more than half a day, so not a connection we count.