I recognize the minimum window, but also know that AC was showing it earlier, but only allowing it to be sold codeshare in economy. After I started asking questions about the codeshare restriction (not that it is necessarily correlated), it stopped showing that option at all.

When J showed up on AC9851 today, I got my travel agent to book. They didn't mention the connection restriction, we'll see if I get stranded in NRT. They both operate out of the same terminal, 1:50h is a ridiculous connection window.

AC should begin offering this option again as this is by far the fastest way to BKK from YYZ over the Pacific.