TP 4401 then UA 1334 at San Francisco
Boston → San Francisco → Toronto
Timetable, San Francisco time
09:59TP 4401 from Boston at the gate
23:29UA 1334 to Toronto leaves the gatealso AC 4067
13 h 30 apart on the timetable
UA 1334 leaves 13 h 30 after TP 4401 arrives on the timetable: more than half a day, so not a connection we count.