PD 604 then UA 3903 at Toronto Pearson
New York LaGuardia → Toronto → Houston
Timetable, Toronto time
11:21PD 604 from New York LaGuardia at the gate
11:00UA 3903 to Houston leaves the gate
23 h 39 apart on the timetable, overnight
UA 3903 leaves 23 h 39 after PD 604 arrives on the timetable: more than half a day, so not a connection we count.