DL 905 then DL 2956 at Atlanta
Salt Lake City → Atlanta → Philadelphia
Timetable, Atlanta time
23:00DL 905 from Salt Lake City at the gate
12:38DL 2956 to Philadelphia leaves the gate
13 h 38 apart on the timetable, overnight
DL 2956 leaves 13 h 38 after DL 905 arrives on the timetable: more than half a day, so not a connection we count.