F9 1428 then AA 490 at Philadelphia
Nashville → Philadelphia → Chicago O'Hare
Timetable, Philadelphia time
21:47F9 1428 from Nashville at the gate
21:02AA 490 to Chicago O'Hare leaves the gate
23 h 15 apart on the timetable, overnight
AA 490 leaves 23 h 15 after F9 1428 arrives on the timetable: more than half a day, so not a connection we count.