UA 1583 then WN 1021 at Denver
Newark → Denver → Omaha
Timetable, Denver time
13:49UA 1583 from Newark at the gate
13:20WN 1021 to Omaha leaves the gate
23 h 31 apart on the timetable, overnight
WN 1021 leaves 23 h 31 after UA 1583 arrives on the timetable: more than half a day, so not a connection we count.