DL 2919 then VA 8101 at San Francisco
Boston → San Francisco → Chicago O'Hare
Timetable, San Francisco time
23:31DL 2919 from Boston at the gatealso SK 3585, AF 3726, LA 6228
23:30VA 8101 to Chicago O'Hare leaves the gate
23 h 59 apart on the timetable, overnight
VA 8101 leaves 23 h 59 after DL 2919 arrives on the timetable: more than half a day, so not a connection we count.