AA 4571 then UA 5618 at O'Hare
Grand Rapids → Chicago → Washington National
Timetable, Chicago time
14:44AA 4571 from Grand Rapids at the gate
14:00UA 5618 to Washington National leaves the gate
23 h 16 apart on the timetable, overnight
UA 5618 leaves 23 h 16 after AA 4571 arrives on the timetable: more than half a day, so not a connection we count.