WN 987 then AA 4557 at Atlanta
Baltimore → Atlanta → New York LaGuardia
Timetable, Atlanta time
10:20WN 987 from Baltimore at the gate
09:39AA 4557 to New York LaGuardia leaves the gate
23 h 19 apart on the timetable, overnight
AA 4557 leaves 23 h 19 after WN 987 arrives on the timetable: more than half a day, so not a connection we count.