UA 2297 then WN 451 at Denver
Boston → Denver → Tulsa
Timetable, Denver time
17:58UA 2297 from Boston at the gate
17:35WN 451 to Tulsa leaves the gate
23 h 37 apart on the timetable, overnight
WN 451 leaves 23 h 37 after UA 2297 arrives on the timetable: more than half a day, so not a connection we count.