AC 1684 then BR 659 at Toronto Pearson
San Diego → Toronto → Taipei
Timetable, Toronto time
20:55AC 1684 from San Diego at the gate
15:31BR 659 to Taipei leaves the gate
18 h 36 apart on the timetable, overnight
BR 659 leaves 18 h 36 after AC 1684 arrives on the timetable: more than half a day, so not a connection we count.