DL 452 then DL 4908 at JFK
Seattle → New York → Nashville
Timetable, New York time
07:00DL 452 from Seattle at the gate
19:05DL 4908 to Nashville leaves the gate
12 h 05 apart on the timetable
DL 4908 leaves 12 h 05 after DL 452 arrives on the timetable: more than half a day, so not a connection we count.