DL 1248 then DL 2516 at Atlanta
Harrisburg → Atlanta → West Palm Beach
Timetable, Atlanta time
16:08DL 1248 from Harrisburg at the gate
15:52DL 2516 to West Palm Beach leaves the gate
23 h 44 apart on the timetable, overnight
DL 2516 leaves 23 h 44 after DL 1248 arrives on the timetable: more than half a day, so not a connection we count.