DL 905 then UA 609 at Atlanta
Salt Lake City → Atlanta → Denver
Timetable, Atlanta time
22:51DL 905 from Salt Lake City at the gate
16:39UA 609 to Denver leaves the gate
17 h 48 apart on the timetable, overnight
UA 609 leaves 17 h 48 after DL 905 arrives on the timetable: more than half a day, so not a connection we count.