UA 3875 then UA 2764 at San Francisco
IAB → San Francisco → Burbank
Timetable, San Francisco time
01:46UA 3875 from IAB at the gate
16:11UA 2764 to Burbank leaves the gatealso AC 4197, UA 5550, EK 6359
14 h 25 apart on the timetable
UA 2764 leaves 14 h 25 after UA 3875 arrives on the timetable: more than half a day, so not a connection we count.