UA 6047 then AA 716 at O'Hare
Pittsburgh → Chicago → Philadelphia
Timetable, Chicago time
19:00UA 6047 from Pittsburgh at the gate
17:47AA 716 to Philadelphia leaves the gate
22 h 47 apart on the timetable, overnight
AA 716 leaves 22 h 47 after UA 6047 arrives on the timetable: more than half a day, so not a connection we count.