Originally Posted by
cas_de
The question I am asking myself (and as a matter of fact you all out here) is whether we stand a realistic chance getting on a later flight YYZ-YHZ in case we miss the original flight.
Yes, there's a decent chance they would be able to put you on a later flight.
There's also a very good chance that there will be additional schedule changes. I would just leave the reservation alone for now. Your connection time may increase again.