DL 2544 then DL 4279 at Salt Lake City
Denver → Salt Lake City → St George
Timetable, Salt Lake City time
07:03DL 2544 from Denver at the gate
20:45DL 4279 to St George leaves the gate
13 h 42 apart on the timetable
DL 4279 leaves 13 h 42 after DL 2544 arrives on the timetable: more than half a day, so not a connection we count.