DL 1091 then VA 8101 at San Francisco
Salt Lake City → San Francisco → Chicago O'Hare
Timetable, San Francisco time
23:59DL 1091 from Salt Lake City at the gatealso VS 4542
23:30VA 8101 to Chicago O'Hare leaves the gate
23 h 31 apart on the timetable, overnight
VA 8101 leaves 23 h 31 after DL 1091 arrives on the timetable: more than half a day, so not a connection we count.