5A 623 then DL 3952 at Salt Lake City
Idaho Falls → Salt Lake City → Tucson
Timetable, Salt Lake City time
18:255A 623 from Idaho Falls at the gate
15:00DL 3952 to Tucson leaves the gate
20 h 35 apart on the timetable, overnight
DL 3952 leaves 20 h 35 after 5A 623 arrives on the timetable: more than half a day, so not a connection we count.