UA 1899 then WN 1749 at Denver
Burbank → Denver → Dallas
Timetable, Denver time
12:36UA 1899 from Burbank at the gate
05:35WN 1749 to Dallas leaves the gate
16 h 59 apart on the timetable, overnight
WN 1749 leaves 16 h 59 after UA 1899 arrives on the timetable: more than half a day, so not a connection we count.