UA 2255 then UA 4743 at Denver
Hayden → Denver → Salt Lake City
Timetable, Denver time
08:15UA 2255 from Hayden at the gate
08:00UA 4743 to Salt Lake City leaves the gate
23 h 45 apart on the timetable, overnight
UA 4743 leaves 23 h 45 after UA 2255 arrives on the timetable: more than half a day, so not a connection we count.