IB 4893 then AA 7561 at San Francisco
Dallas-Fort Worth → San Francisco → Las Vegas
Timetable, San Francisco time
22:31IB 4893 from Dallas-Fort Worth at the gate
19:19AA 7561 to Las Vegas leaves the gate
20 h 48 apart on the timetable, overnight
AA 7561 leaves 20 h 48 after IB 4893 arrives on the timetable: more than half a day, so not a connection we count.