TK 9588 then LH 8878 at San Francisco
Portland (Oregon) → San Francisco → Las Vegas
Timetable, San Francisco time
15:15TK 9588 from Portland (Oregon) at the gate
14:20LH 8878 to Las Vegas leaves the gate
23 h 05 apart on the timetable, overnight
LH 8878 leaves 23 h 05 after TK 9588 arrives on the timetable: more than half a day, so not a connection we count.