DL 5867 then DL 5679 at Boston
South Bend → Boston → Louisville
Timetable, Boston time
16:19DL 5867 from South Bend at the gate
09:55DL 5679 to Louisville leaves the gate
17 h 36 apart on the timetable, overnight
DL 5679 leaves 17 h 36 after DL 5867 arrives on the timetable: more than half a day, so not a connection we count.