AA 5002 then UA 5618 at O'Hare
Cedar Rapids → Chicago → Washington National
Timetable, Chicago time
15:30AA 5002 from Cedar Rapids at the gate
14:00UA 5618 to Washington National leaves the gate
22 h 30 apart on the timetable, overnight
UA 5618 leaves 22 h 30 after AA 5002 arrives on the timetable: more than half a day, so not a connection we count.