WN 993 then UA 143 at Denver
Baltimore → Denver → Tokyo
Timetable, Denver time
11:45WN 993 from Baltimore at the gate
11:20UA 143 to Tokyo leaves the gate
23 h 35 apart on the timetable, overnight
UA 143 leaves 23 h 35 after WN 993 arrives on the timetable: more than half a day, so not a connection we count.