DL 445 then DL 2608 at Salt Lake City
Boston → Salt Lake City → Idaho Falls
Timetable, Salt Lake City time
22:13DL 445 from Boston at the gate
21:05DL 2608 to Idaho Falls leaves the gate
22 h 52 apart on the timetable, overnight
DL 2608 leaves 22 h 52 after DL 445 arrives on the timetable: more than half a day, so not a connection we count.