WN 4675 then DL 5679 at Boston
San Diego → Boston → Louisville
Timetable, Boston time
18:00WN 4675 from San Diego at the gate
09:55DL 5679 to Louisville leaves the gate
15 h 55 apart on the timetable, overnight
DL 5679 leaves 15 h 55 after WN 4675 arrives on the timetable: more than half a day, so not a connection we count.