UA 2646 then DL 514 at Phoenix
Newark → Phoenix → Boston
Timetable, Phoenix time
11:14UA 2646 from Newark at the gate
23:23DL 514 to Boston leaves the gate
12 h 09 apart on the timetable
DL 514 leaves 12 h 09 after UA 2646 arrives on the timetable: more than half a day, so not a connection we count.