2I 1650 then DL 855 at Atlanta
Cincinnati → Atlanta → Boston
Timetable, Atlanta time
15:582I 1650 from Cincinnati at the gate
09:55DL 855 to Boston leaves the gate
17 h 57 apart on the timetable, overnight
DL 855 leaves 17 h 57 after 2I 1650 arrives on the timetable: more than half a day, so not a connection we count.