UA 2433 then DL 5679 at Boston
Newark → Boston → Louisville
Timetable, Boston time
17:27UA 2433 from Newark at the gate
09:55DL 5679 to Louisville leaves the gate
16 h 28 apart on the timetable, overnight
DL 5679 leaves 16 h 28 after UA 2433 arrives on the timetable: more than half a day, so not a connection we count.