Thanks for this. I did as you say… no real luck.

I have also been playing with chatGPT and got up to this, in case anyone is interested. I will continue fiddling.

1. London (LHR) → Doha (DOH) — Qatar Airways A380 First
   (Launch your trip in F and angle further east inside the Europe/Middle East continent.)
2. Doha (DOH) → Bangkok (BKK) — Qatar Airways A380 First
   (Keeps the direction east and adds a long F sector; QR is boosting A380s on DOH–BKK.)
3. Bangkok (BKK) → Hong Kong (HKG) — Cathay Pacific Business
   (No reliable F on this short hop; CX J here stretches the Asia mileage.)
4. Hong Kong (HKG) → Tokyo (HND) — Cathay Pacific or JAL Business
   (Another eastward Asian sector to set up the Pacific crossing.)
5. Tokyo (HND) → Sydney (SYD) — JAL Business
   (JAL doesn’t sell F on Japan–Australia; J only here.)
6. Sydney (SYD) → Los Angeles (LAX) — Qantas A380 First
   (Looooong Trans-Pac in true F; QF operates A380 First on this flagship.)
7. Los Angeles (LAX) → New York (JFK) — American A321T Flagship First
   (True transcon First to add distance within North America.)
8. New York (JFK) → London (LHR) — British Airways First
   (Classic Trans-Atl in F to finish where you started.)