DL 562 then DL 2857 at Atlanta
Seattle → Atlanta → Harrisburg
Timetable, Atlanta time
16:13DL 562 from Seattle at the gate
15:47DL 2857 to Harrisburg leaves the gate
23 h 34 apart on the timetable, overnight
DL 2857 leaves 23 h 34 after DL 562 arrives on the timetable: more than half a day, so not a connection we count.