UA 3762 then AA 489 at O'Hare
Manhattan → Chicago → Washington National
Timetable, Chicago time
22:41UA 3762 from Manhattan at the gate
17:49AA 489 to Washington National leaves the gate
19 h 08 apart on the timetable, overnight
AA 489 leaves 19 h 08 after UA 3762 arrives on the timetable: more than half a day, so not a connection we count.