AA 706 then G7 3376 at O'Hare
Washington National → Chicago → St Louis
Timetable, Chicago time
16:18AA 706 from Washington National at the gate
11:00G7 3376 to St Louis leaves the gate
18 h 42 apart on the timetable, overnight
G7 3376 leaves 18 h 42 after AA 706 arrives on the timetable: more than half a day, so not a connection we count.