DL 2450 then DL 1374 at Atlanta
Jacksonville → Atlanta → Louisville
Timetable, Atlanta time
08:29DL 2450 from Jacksonville at the gate
07:45DL 1374 to Louisville leaves the gate
23 h 16 apart on the timetable, overnight
DL 1374 leaves 23 h 16 after DL 2450 arrives on the timetable: more than half a day, so not a connection we count.