UA 1669 then DL 5818 at Boston
Newark → Boston → Raleigh-Durham
Timetable, Boston time
12:26UA 1669 from Newark at the gate
09:55DL 5818 to Raleigh-Durham leaves the gate
21 h 29 apart on the timetable, overnight
DL 5818 leaves 21 h 29 after UA 1669 arrives on the timetable: more than half a day, so not a connection we count.