AA 4615 then WN 1957 at Boston
Cincinnati → Boston → Baltimore
Timetable, Boston time
19:16AA 4615 from Cincinnati at the gate
17:35WN 1957 to Baltimore leaves the gate
22 h 19 apart on the timetable, overnight
WN 1957 leaves 22 h 19 after AA 4615 arrives on the timetable: more than half a day, so not a connection we count.