AA 2054 then DL 5679 at Boston
Chicago O'Hare → Boston → Louisville
Timetable, Boston time
14:31AA 2054 from Chicago O'Hare at the gate
09:55DL 5679 to Louisville leaves the gate
19 h 24 apart on the timetable, overnight
DL 5679 leaves 19 h 24 after AA 2054 arrives on the timetable: more than half a day, so not a connection we count.