WN 1639 then DL 514 at Phoenix
Lagos → Phoenix → Boston
Timetable, Phoenix time
07:50WN 1639 from Lagos at the gate
23:23DL 514 to Boston leaves the gate
15 h 33 apart on the timetable
DL 514 leaves 15 h 33 after WN 1639 arrives on the timetable: more than half a day, so not a connection we count.