DL 2646 then B6 206 at Boston
Chicago O'Hare → Boston → Presque Isle
Timetable, Boston time
23:08DL 2646 from Chicago O'Hare at the gate
20:55B6 206 to Presque Isle leaves the gate
21 h 47 apart on the timetable, overnight
B6 206 leaves 21 h 47 after DL 2646 arrives on the timetable: more than half a day, so not a connection we count.