OO 225 then AA 6332 at O'Hare
Richmond → Chicago → St Louis
Timetable, Chicago time
11:48OO 225 from Richmond at the gate
11:15AA 6332 to St Louis leaves the gate
23 h 27 apart on the timetable, overnight
AA 6332 leaves 23 h 27 after OO 225 arrives on the timetable: more than half a day, so not a connection we count.