B6 1860 then DL 5679 at Boston
Philadelphia → Boston → Louisville
Timetable, Boston time
17:25B6 1860 from Philadelphia at the gate
09:55DL 5679 to Louisville leaves the gate
16 h 30 apart on the timetable, overnight
DL 5679 leaves 16 h 30 after B6 1860 arrives on the timetable: more than half a day, so not a connection we count.