UA 4456 then UA 2495 at Houston
Baton Rouge → Houston → New York LaGuardia
Timetable, Houston time
06:21UA 4456 from Baton Rouge at the gate
18:40UA 2495 to New York LaGuardia leaves the gate
12 h 19 apart on the timetable
UA 2495 leaves 12 h 19 after UA 4456 arrives on the timetable: more than half a day, so not a connection we count.