UA 3011 then DL 1778 at Houston
São Paulo → Houston → New York LaGuardia
Timetable, Houston time
06:36UA 3011 from São Paulo at the gate
18:45DL 1778 to New York LaGuardia leaves the gate
12 h 09 apart on the timetable
DL 1778 leaves 12 h 09 after UA 3011 arrives on the timetable: more than half a day, so not a connection we count.