DL 745 then DL 4312 at Salt Lake City
Fort Lauderdale → Salt Lake City → Butte
Timetable, Salt Lake City time
22:09DL 745 from Fort Lauderdale at the gate
15:40DL 4312 to Butte leaves the gate
17 h 31 apart on the timetable, overnight
DL 4312 leaves 17 h 31 after DL 745 arrives on the timetable: more than half a day, so not a connection we count.