AA 6422 then WN 878 at Denver
Los Angeles → Denver → Cincinnati
Timetable, Denver time
11:46AA 6422 from Los Angeles at the gate
11:45WN 878 to Cincinnati leaves the gate
23 h 59 apart on the timetable, overnight
WN 878 leaves 23 h 59 after AA 6422 arrives on the timetable: more than half a day, so not a connection we count.