AA 3067 then G7 3376 at O'Hare
Boston → Chicago → St Louis
Timetable, Chicago time
14:02AA 3067 from Boston at the gate
11:00G7 3376 to St Louis leaves the gate
20 h 58 apart on the timetable, overnight
G7 3376 leaves 20 h 58 after AA 3067 arrives on the timetable: more than half a day, so not a connection we count.