AA 4196 then UA 5618 at O'Hare
Rochester (RST) → Chicago → Washington National
Timetable, Chicago time
14:08AA 4196 from Rochester (RST) at the gate
14:00UA 5618 to Washington National leaves the gate
23 h 52 apart on the timetable, overnight
UA 5618 leaves 23 h 52 after AA 4196 arrives on the timetable: more than half a day, so not a connection we count.