Originally Posted by Shareholder
As long as you're on a through single ticket, you should be alright. There is a special line for connecting passengers at T2, and your bags should be at a special luggage carousel at T2 once you've made the connection by bus. AC also has staff calling out flights that are close to departure to fast track any stragglers through preclearance and security.
LOL. The operative word is "should". Add to the equation delays in arrival to YYZ and the bus tour of the airport between T1 and T2. I avoid YYZ for connections. Keeps my blood pressure in check.