DL 5626 then DL 5679 at Boston
Charlotte → Boston → Louisville
Timetable, Boston time
12:12DL 5626 from Charlotte at the gate
09:55DL 5679 to Louisville leaves the gate
21 h 43 apart on the timetable, overnight
DL 5679 leaves 21 h 43 after DL 5626 arrives on the timetable: more than half a day, so not a connection we count.