DL 2646 then B6 907 at Boston
Chicago O'Hare → Boston → Nashville
Timetable, Boston time
22:53DL 2646 from Chicago O'Hare at the gate
21:20B6 907 to Nashville leaves the gate
22 h 27 apart on the timetable, overnight
B6 907 leaves 22 h 27 after DL 2646 arrives on the timetable: more than half a day, so not a connection we count.