B6 2901 then AA 951 at JFK
Buffalo → New York → São Paulo
Timetable, New York time
18:30B6 2901 from Buffalo at the gate
18:10AA 951 to São Paulo leaves the gate
23 h 40 apart on the timetable, overnight
AA 951 leaves 23 h 40 after B6 2901 arrives on the timetable: more than half a day, so not a connection we count.