DL 2919 then DL 335 at San Francisco
Boston → San Francisco → Detroit
Timetable, San Francisco time
23:31DL 2919 from Boston at the gatealso SK 3585, AF 3726, LA 6228
22:40DL 335 to Detroit leaves the gatealso WS 8016
23 h 09 apart on the timetable, overnight
DL 335 leaves 23 h 09 after DL 2919 arrives on the timetable: more than half a day, so not a connection we count.