DL 905 then DL 2104 at Atlanta
Salt Lake City → Atlanta → Austin
Timetable, Atlanta time
23:00DL 905 from Salt Lake City at the gate
12:20DL 2104 to Austin leaves the gate
13 h 20 apart on the timetable, overnight
DL 2104 leaves 13 h 20 after DL 905 arrives on the timetable: more than half a day, so not a connection we count.