DL 2646 then QE 257 at Boston
Chicago O'Hare → Boston → Providence
Timetable, Boston time
23:08DL 2646 from Chicago O'Hare at the gate
22:10QE 257 to Providence leaves the gate
23 h 02 apart on the timetable, overnight
QE 257 leaves 23 h 02 after DL 2646 arrives on the timetable: more than half a day, so not a connection we count.