DL 1091 then UA 853 at San Francisco
Salt Lake City → San Francisco → Taipei
Timetable, San Francisco time
23:59DL 1091 from Salt Lake City at the gatealso VS 4542
23:10UA 853 to Taipei leaves the gate
23 h 11 apart on the timetable, overnight
UA 853 leaves 23 h 11 after DL 1091 arrives on the timetable: more than half a day, so not a connection we count.