AA 4397 then WN 1717 at Boston
New York JFK → Boston → Baltimore
Timetable, Boston time
23:44AA 4397 from New York JFK at the gate
11:45WN 1717 to Baltimore leaves the gate
12 h 01 apart on the timetable, overnight
WN 1717 leaves 12 h 01 after AA 4397 arrives on the timetable: more than half a day, so not a connection we count.