AA 3042 then UA 2160 at O'Hare
Harrisburg → Chicago → Washington National
Timetable, Chicago time
07:25AA 3042 from Harrisburg at the gate
19:45UA 2160 to Washington National leaves the gate
12 h 20 apart on the timetable
UA 2160 leaves 12 h 20 after AA 3042 arrives on the timetable: more than half a day, so not a connection we count.