DL 905 then DL 2857 at Atlanta
Salt Lake City → Atlanta → Harrisburg
Timetable, Atlanta time
23:00DL 905 from Salt Lake City at the gate
15:47DL 2857 to Harrisburg leaves the gate
16 h 47 apart on the timetable, overnight
DL 2857 leaves 16 h 47 after DL 905 arrives on the timetable: more than half a day, so not a connection we count.