AA 3490 then G7 3376 at O'Hare
Grand Rapids → Chicago → St Louis
Timetable, Chicago time
16:39AA 3490 from Grand Rapids at the gate
11:00G7 3376 to St Louis leaves the gate
18 h 21 apart on the timetable, overnight
G7 3376 leaves 18 h 21 after AA 3490 arrives on the timetable: more than half a day, so not a connection we count.