As I continued to play around with Matrix, for about the same price of Emirates new F to Haneda (
EK new F CAI/TUN-HND with Y return DEL-TUN/CAI for U$ 2156), itīs also possible to fly Air France La Premiere to Hong Kong.
The logic is the same to get this price: outbound in first class, inbound in economy (possibly throw away). In this case, itīs TUN-CDG on AF business, then CDG-HKG on La Premiere, with as much as 10 hours on CDG lounge. The return is DEL-TUN in economy. Price: U$ 2.196.
Booking this is a bit trickier, as Air France doesnīt allow to mix classes on itīs website. I was able to price this itinerary on Priceline (
https://www.priceline.com/m/fly/search/TUN-HKG-20191023/DEL-TUN-20191029/details/R_TUN201910230950CDG201910231325JAF1085~CDG2019102 32340HKG201910241745FAF188-DEL201910290105CDG201910290555EAF225~CDG2019102913 50TUN201910291615LAF1184_1_USD0.00?num-adults=1&cjevent=4fd81fd8410c11e9835e00e60a240612& refid=CO8073572&refclickid=11554367SID).