AA 818 then G7 3376 at O'Hare
Charlotte → Chicago → St Louis
Timetable, Chicago time
12:19AA 818 from Charlotte at the gate
11:00G7 3376 to St Louis leaves the gate
22 h 41 apart on the timetable, overnight
G7 3376 leaves 22 h 41 after AA 818 arrives on the timetable: more than half a day, so not a connection we count.