UA 2019 then DL 1697 at Phoenix
Lagos → Phoenix → Boston
Timetable, Phoenix time
21:59UA 2019 from Lagos at the gate
14:20DL 1697 to Boston leaves the gate
16 h 21 apart on the timetable, overnight
DL 1697 leaves 16 h 21 after UA 2019 arrives on the timetable: more than half a day, so not a connection we count.