AA 125 then G7 3376 at O'Hare
Madrid → Chicago → St Louis
Timetable, Chicago time
15:05AA 125 from Madrid at the gate
11:00G7 3376 to St Louis leaves the gate
19 h 55 apart on the timetable, overnight
G7 3376 leaves 19 h 55 after AA 125 arrives on the timetable: more than half a day, so not a connection we count.