DL 4119 then DL 514 at Phoenix
Lagos → Phoenix → Boston
Timetable, Phoenix time
10:32DL 4119 from Lagos at the gate
23:23DL 514 to Boston leaves the gate
12 h 51 apart on the timetable
DL 514 leaves 12 h 51 after DL 4119 arrives on the timetable: more than half a day, so not a connection we count.