DL 2141 then DL 5679 at Boston
Nashville → Boston → Louisville
Timetable, Boston time
15:01DL 2141 from Nashville at the gate
09:55DL 5679 to Louisville leaves the gate
18 h 54 apart on the timetable, overnight
DL 5679 leaves 18 h 54 after DL 2141 arrives on the timetable: more than half a day, so not a connection we count.