DL 1171 then DL 5679 at Boston
Detroit → Boston → Louisville
Timetable, Boston time
15:52DL 1171 from Detroit at the gate
09:55DL 5679 to Louisville leaves the gate
18 h 03 apart on the timetable, overnight
DL 5679 leaves 18 h 03 after DL 1171 arrives on the timetable: more than half a day, so not a connection we count.