UA 2199 then AV 2354 at San Francisco
Los Angeles → San Francisco → Denver
Timetable, San Francisco time
12:31UA 2199 from Los Angeles at the gatealso VA 8062, NZ 9277
05:00AV 2354 to Denver leaves the gate
16 h 29 apart on the timetable, overnight
AV 2354 leaves 16 h 29 after UA 2199 arrives on the timetable: more than half a day, so not a connection we count.