WN 1545 then DL 514 at Phoenix
Las Vegas → Phoenix → Boston
Timetable, Phoenix time
10:50WN 1545 from Las Vegas at the gate
23:23DL 514 to Boston leaves the gate
12 h 33 apart on the timetable
DL 514 leaves 12 h 33 after WN 1545 arrives on the timetable: more than half a day, so not a connection we count.