UA 2430 then AA 5347 at Philadelphia
Chicago O'Hare → Philadelphia → Richmond
Timetable, Philadelphia time
17:47UA 2430 from Chicago O'Hare at the gate
10:02AA 5347 to Richmond leaves the gate
16 h 15 apart on the timetable, overnight
AA 5347 leaves 16 h 15 after UA 2430 arrives on the timetable: more than half a day, so not a connection we count.