AA 9950 then UA 247 at O'Hare
Philadelphia → Chicago → Omaha
Timetable, Chicago time
13:49AA 9950 from Philadelphia at the gate
12:40UA 247 to Omaha leaves the gate
22 h 51 apart on the timetable, overnight
UA 247 leaves 22 h 51 after AA 9950 arrives on the timetable: more than half a day, so not a connection we count.