AA 9950 then AA 4745 at O'Hare
Philadelphia → Chicago → Kansas City
Timetable, Chicago time
13:49AA 9950 from Philadelphia at the gate
13:24AA 4745 to Kansas City leaves the gate
23 h 35 apart on the timetable, overnight
AA 4745 leaves 23 h 35 after AA 9950 arrives on the timetable: more than half a day, so not a connection we count.