I mean the Toronto-Quebec travel time doesn't really make sense to me.
Toronto-Ottawa will be about 3hrs, Ottawa-Montreal probably around 1.5hrs, and Montreal-Quebec at 2.75hrs, for a total of 7.25hrs. Even with a small layover in Montreal theoretically, how do you get 10hrs for end-to-end?
Ultimately Toronto-Quebec is a fairly low demand route that is a bit long for rail to serve anyway. Most of the utility is in the shorter city pairs.
Toronto-Ottawa in 3hrs would be huge for most people in Ontario, for example.
The Toronto-Montreal travel time continues to be disappointing, but it is still a not insignificant improvement over today.