Does AF still offer free layovers in Paris when booking flights with connections in CDG? I am looking at booking a flight from Toronto to Tokyo with a connection in CDG. On the Return, when I select a layover of 1 or 2 nights, it increases the cost by $900. I am selection dates where the return cost is the same, so it's not like one of those segments is more.

I'm doing this via multi destinations (YYZ > HND via CDG, HND > CDG, CDG > YYZ) Is this something no longer offered or that I must call in to purchase?