DL 1255 then DL 2563 at Atlanta
Harrisburg → Atlanta → West Palm Beach
Timetable, Atlanta time
08:10DL 1255 from Harrisburg at the gate
20:45DL 2563 to West Palm Beach leaves the gate
12 h 35 apart on the timetable
DL 2563 leaves 12 h 35 after DL 1255 arrives on the timetable: more than half a day, so not a connection we count.