F9 1428 then AA 6049 at Philadelphia
Nashville → Philadelphia → Portland (Maine)
Timetable, Philadelphia time
21:47F9 1428 from Nashville at the gate
21:25AA 6049 to Portland (Maine) leaves the gate
23 h 38 apart on the timetable, overnight
AA 6049 leaves 23 h 38 after F9 1428 arrives on the timetable: more than half a day, so not a connection we count.