DL 1715 then DL 977 at San Francisco
Los Angeles → San Francisco → Boston
Timetable, San Francisco time
13:52DL 1715 from Los Angeles at the gatealso SK 3630, AM 3785, LA 6420, WS 6875, AF 8877, CI 9169
12:55DL 977 to Boston leaves the gatealso KE 6731
23 h 03 apart on the timetable, overnight
DL 977 leaves 23 h 03 after DL 1715 arrives on the timetable: more than half a day, so not a connection we count.