WN 397 then WN 2873 at Phoenix
Austin → Phoenix → Salt Lake City
Timetable, Phoenix time
09:20WN 397 from Austin at the gate
09:15WN 2873 to Salt Lake City leaves the gate
23 h 55 apart on the timetable, overnight
WN 2873 leaves 23 h 55 after WN 397 arrives on the timetable: more than half a day, so not a connection we count.