AA 3091 then UA 4743 at Denver
Kansas City → Denver → Salt Lake City
Timetable, Denver time
12:24AA 3091 from Kansas City at the gate
08:00UA 4743 to Salt Lake City leaves the gate
19 h 36 apart on the timetable, overnight
UA 4743 leaves 19 h 36 after AA 3091 arrives on the timetable: more than half a day, so not a connection we count.