WN 2115 then DL 1340 at Salt Lake City
Denver → Salt Lake City → Billings
Timetable, Salt Lake City time
08:50WN 2115 from Denver at the gate
21:00DL 1340 to Billings leaves the gate
12 h 10 apart on the timetable
DL 1340 leaves 12 h 10 after WN 2115 arrives on the timetable: more than half a day, so not a connection we count.