AA 9950 then UA 2104 at O'Hare
Philadelphia → Chicago → Palm Springs
Timetable, Chicago time
13:49AA 9950 from Philadelphia at the gate
09:15UA 2104 to Palm Springs leaves the gate
19 h 26 apart on the timetable, overnight
UA 2104 leaves 19 h 26 after AA 9950 arrives on the timetable: more than half a day, so not a connection we count.