B6 993 then WN 1749 at Denver
Boston → Denver → Dallas
Timetable, Denver time
13:07B6 993 from Boston at the gate
05:35WN 1749 to Dallas leaves the gate
16 h 28 apart on the timetable, overnight
WN 1749 leaves 16 h 28 after B6 993 arrives on the timetable: more than half a day, so not a connection we count.