UA 271 then AV 2352 at San Francisco
Washington → San Francisco → Burbank
Timetable, San Francisco time
12:32UA 271 from Washington at the gatealso NZ 9180, MS 9321
07:15AV 2352 to Burbank leaves the gate
18 h 43 apart on the timetable, overnight
AV 2352 leaves 18 h 43 after UA 271 arrives on the timetable: more than half a day, so not a connection we count.