WN 254 then DL 1451 at Phoenix
Atlanta → Phoenix → Salt Lake City
Timetable, Phoenix time
08:05WN 254 from Atlanta at the gate
20:11DL 1451 to Salt Lake City leaves the gate
12 h 06 apart on the timetable
DL 1451 leaves 12 h 06 after WN 254 arrives on the timetable: more than half a day, so not a connection we count.