WN 518 then DL 514 at Phoenix
Las Vegas → Phoenix → Boston
Timetable, Phoenix time
09:55WN 518 from Las Vegas at the gate
23:23DL 514 to Boston leaves the gate
13 h 28 apart on the timetable
DL 514 leaves 13 h 28 after WN 518 arrives on the timetable: more than half a day, so not a connection we count.