DL 1738 then DL 1697 at Phoenix
Salt Lake City → Phoenix → Boston
Timetable, Phoenix time
17:14DL 1738 from Salt Lake City at the gate
14:20DL 1697 to Boston leaves the gate
21 h 06 apart on the timetable, overnight
DL 1697 leaves 21 h 06 after DL 1738 arrives on the timetable: more than half a day, so not a connection we count.