DL 445 then DL 4279 at Salt Lake City
Boston → Salt Lake City → St George
Timetable, Salt Lake City time
22:13DL 445 from Boston at the gate
20:45DL 4279 to St George leaves the gate
22 h 32 apart on the timetable, overnight
DL 4279 leaves 22 h 32 after DL 445 arrives on the timetable: more than half a day, so not a connection we count.