WN 2699 then DL 751 at Denver
St Louis → Denver → New York LaGuardia
Timetable, Denver time
11:25WN 2699 from St Louis at the gate
11:19DL 751 to New York LaGuardia leaves the gate
23 h 54 apart on the timetable, overnight
DL 751 leaves 23 h 54 after WN 2699 arrives on the timetable: more than half a day, so not a connection we count.