AA 3077 then G7 3376 at O'Hare
Las Vegas → Chicago → St Louis
Timetable, Chicago time
11:52AA 3077 from Las Vegas at the gate
11:00G7 3376 to St Louis leaves the gate
23 h 08 apart on the timetable, overnight
G7 3376 leaves 23 h 08 after AA 3077 arrives on the timetable: more than half a day, so not a connection we count.