UA 1074 then UA 581 at San Francisco
Boston → San Francisco → Cleveland
Timetable, San Francisco time
13:34UA 1074 from Boston at the gatealso VA 8313, NZ 9021
12:45UA 581 to Cleveland leaves the gate
23 h 11 apart on the timetable, overnight
UA 581 leaves 23 h 11 after UA 1074 arrives on the timetable: more than half a day, so not a connection we count.