DL 751 then UA 2154 at Denver
New York LaGuardia → Denver → Burbank
Timetable, Denver time
11:21DL 751 from New York LaGuardia at the gate
11:15UA 2154 to Burbank leaves the gate
23 h 54 apart on the timetable, overnight
UA 2154 leaves 23 h 54 after DL 751 arrives on the timetable: more than half a day, so not a connection we count.