DL 905 then DL 2833 at Atlanta
Salt Lake City → Atlanta → St Louis
Timetable, Atlanta time
23:00DL 905 from Salt Lake City at the gate
20:58DL 2833 to St Louis leaves the gate
21 h 58 apart on the timetable, overnight
DL 2833 leaves 21 h 58 after DL 905 arrives on the timetable: more than half a day, so not a connection we count.