AA 9975 then F9 4889 at Philadelphia
Roanoke → Philadelphia → Nashville
Timetable, Philadelphia time
15:24AA 9975 from Roanoke at the gate
14:58F9 4889 to Nashville leaves the gate
23 h 34 apart on the timetable, overnight
F9 4889 leaves 23 h 34 after AA 9975 arrives on the timetable: more than half a day, so not a connection we count.