DL 5703 then AA 4609 at Boston
Baltimore → Boston → Cincinnati
Timetable, Boston time
10:41DL 5703 from Baltimore at the gate
09:15AA 4609 to Cincinnati leaves the gate
22 h 34 apart on the timetable, overnight
AA 4609 leaves 22 h 34 after DL 5703 arrives on the timetable: more than half a day, so not a connection we count.