Originally Posted by
yyz_atc_qq
I'm not 100% in agreement. 99.99% yes, but there is one other VERY VERY remote possibility. The BMW service that no one really knows truly how people are selected. There is a slight chance that if you were selected for the service they could take you to T3, the only thing is that in the case of the OP, how would AC know in advance that you were connecting to a different airline. Normally (haven't heard of any examples otherwise) the car service is for domestic-international connections within T1.
I feel like the odds of winning the lottery are better than the odds of this happening