AA 9866 then AA 2700 at O'Hare
Marquette → Chicago → Washington National
Timetable, Chicago time
10:30AA 9866 from Marquette at the gate
08:52AA 2700 to Washington National leaves the gate
22 h 22 apart on the timetable, overnight
AA 2700 leaves 22 h 22 after AA 9866 arrives on the timetable: more than half a day, so not a connection we count.