I’m looking at premium class redemptions to CDG in September. I can see availability on the Aus - Sin leg and Sin - CDG leg when I search independently (4 hr between flights in Singapore). When I search Aus - CDG, it only comes up with a waitlist option, not with those flight combinations, but instead a 24 hour stopover. Is it just a matter of calling up to get the actual flights booked?
Also, to confirm, if I book a mixed class journey, it is priced at the higher cabin for the entire journey. (Eg Premium economy and first, is charged at first rates all the way.)