AA 3815 then AA 126 at O'Hare
Hartford → Chicago → Madrid
Timetable, Chicago time
20:15AA 3815 from Hartford at the gate
18:05AA 126 to Madrid leaves the gate
21 h 50 apart on the timetable, overnight
AA 126 leaves 21 h 50 after AA 3815 arrives on the timetable: more than half a day, so not a connection we count.