DL 346 then UA 4743 at Denver
Atlanta → Denver → Salt Lake City
Timetable, Denver time
09:30DL 346 from Atlanta at the gate
08:00UA 4743 to Salt Lake City leaves the gate
22 h 30 apart on the timetable, overnight
UA 4743 leaves 22 h 30 after DL 346 arrives on the timetable: more than half a day, so not a connection we count.