UA 2012 then WN 2160 at Denver
Baltimore → Denver → San Antonio
Timetable, Denver time
18:25UA 2012 from Baltimore at the gate
14:35WN 2160 to San Antonio leaves the gate
20 h 10 apart on the timetable, overnight
WN 2160 leaves 20 h 10 after UA 2012 arrives on the timetable: more than half a day, so not a connection we count.