B6 733 then AC 3994 at San Francisco
Boston → San Francisco → Boise
Timetable, San Francisco time
19:35B6 733 from Boston at the gatealso EY 8330
18:30AC 3994 to Boise leaves the gatealso UA 5644
22 h 55 apart on the timetable, overnight
AC 3994 leaves 22 h 55 after B6 733 arrives on the timetable: more than half a day, so not a connection we count.