AC 3997 then AA 2571 at San Francisco
Boise → San Francisco → Dallas-Fort Worth
Timetable, San Francisco time
09:23AC 3997 from Boise at the gatealso UA 4639, NH 7335
08:55AA 2571 to Dallas-Fort Worth leaves the gatealso QF 3304, BA 4399, G3 6348, GF 6870, IB 8042
23 h 32 apart on the timetable, overnight
AA 2571 leaves 23 h 32 after AC 3997 arrives on the timetable: more than half a day, so not a connection we count.