AC 4285 then TP 4392 at San Francisco
Ontario → San Francisco → Boston
Timetable, San Francisco time
17:50AC 4285 from Ontario at the gate
10:44TP 4392 to Boston leaves the gate
16 h 54 apart on the timetable, overnight
TP 4392 leaves 16 h 54 after AC 4285 arrives on the timetable: more than half a day, so not a connection we count.