AC 4375 then QR 2134 at San Francisco
Chicago O'Hare → San Francisco → Boise
Timetable, San Francisco time
18:56AC 4375 from Chicago O'Hare at the gatealso NZ 9330
18:47QR 2134 to Boise leaves the gate
23 h 51 apart on the timetable, overnight
QR 2134 leaves 23 h 51 after AC 4375 arrives on the timetable: more than half a day, so not a connection we count.