DL 3828 then DL 2111 at Salt Lake City
Billings → Salt Lake City → Boise
Timetable, Salt Lake City time
20:10DL 3828 from Billings at the gate
17:20DL 2111 to Boise leaves the gate
21 h 10 apart on the timetable, overnight
DL 2111 leaves 21 h 10 after DL 3828 arrives on the timetable: more than half a day, so not a connection we count.