AA 9950 then UA 2145 at O'Hare
Philadelphia → Chicago → Sacramento
Timetable, Chicago time
13:49AA 9950 from Philadelphia at the gate
09:11UA 2145 to Sacramento leaves the gate
19 h 22 apart on the timetable, overnight
UA 2145 leaves 19 h 22 after AA 9950 arrives on the timetable: more than half a day, so not a connection we count.