AC 2009 then AC 591 at Toronto Pearson
Saint John → Toronto → Houston
Timetable, Toronto time
19:28AC 2009 from Saint John at the gate
08:05AC 591 to Houston leaves the gate
12 h 37 apart on the timetable, overnight
AC 591 leaves 12 h 37 after AC 2009 arrives on the timetable: more than half a day, so not a connection we count.