DL 2646 then B6 601 at Boston
Chicago O'Hare → Boston → New Orleans
Timetable, Boston time
23:08DL 2646 from Chicago O'Hare at the gate
20:59B6 601 to New Orleans leaves the gate
21 h 51 apart on the timetable, overnight
B6 601 leaves 21 h 51 after DL 2646 arrives on the timetable: more than half a day, so not a connection we count.