5A 623 then WN 2258 at Salt Lake City
Idaho Falls → Salt Lake City → Las Vegas
Timetable, Salt Lake City time
18:255A 623 from Idaho Falls at the gate
18:05WN 2258 to Las Vegas leaves the gate
23 h 40 apart on the timetable, overnight
WN 2258 leaves 23 h 40 after 5A 623 arrives on the timetable: more than half a day, so not a connection we count.