AC 1684 then AC 1914 at Toronto Pearson
San Diego → Toronto → Ottawa
Timetable, Toronto time
20:55AC 1684 from San Diego at the gate
16:10AC 1914 to Ottawa leaves the gate
19 h 15 apart on the timetable, overnight
AC 1914 leaves 19 h 15 after AC 1684 arrives on the timetable: more than half a day, so not a connection we count.