UA 2433 then DL 5818 at Boston
Newark → Boston → Raleigh-Durham
Timetable, Boston time
17:27UA 2433 from Newark at the gate
09:55DL 5818 to Raleigh-Durham leaves the gate
16 h 28 apart on the timetable, overnight
DL 5818 leaves 16 h 28 after UA 2433 arrives on the timetable: more than half a day, so not a connection we count.