WN 4535 then AA 9950 at Philadelphia
Nashville → Philadelphia → Chicago O'Hare
Timetable, Philadelphia time
13:10WN 4535 from Nashville at the gate
13:01AA 9950 to Chicago O'Hare leaves the gate
23 h 51 apart on the timetable, overnight
AA 9950 leaves 23 h 51 after WN 4535 arrives on the timetable: more than half a day, so not a connection we count.