DL 905 then DL 1692 at Atlanta
Salt Lake City → Atlanta → Philadelphia
Timetable, Atlanta time
22:51DL 905 from Salt Lake City at the gate
14:16DL 1692 to Philadelphia leaves the gate
15 h 25 apart on the timetable, overnight
DL 1692 leaves 15 h 25 after DL 905 arrives on the timetable: more than half a day, so not a connection we count.