DL 2173 then F9 1439 at Salt Lake City
Boise → Salt Lake City → Phoenix Sky Harbor
Timetable, Salt Lake City time
07:15DL 2173 from Boise at the gate
22:28F9 1439 to Phoenix Sky Harbor leaves the gate
15 h 13 apart on the timetable
F9 1439 leaves 15 h 13 after DL 2173 arrives on the timetable: more than half a day, so not a connection we count.