UA 2207 then AA 9912 at O'Hare
Philadelphia → Chicago → Richmond
Timetable, Chicago time
12:29UA 2207 from Philadelphia at the gate
07:30AA 9912 to Richmond leaves the gate
19 h 01 apart on the timetable, overnight
AA 9912 leaves 19 h 01 after UA 2207 arrives on the timetable: more than half a day, so not a connection we count.