Very helpful.
I originally found it odd that PK-GIF has been flying to AMS and LHR (
https://www.flightradar24.com/data/aircraft/pk-gif) as recently as yesterday, but upon closer inspection, it seems the CGK<>HND route is only commencing F as of 10/29. Same seems to be true of PK-GIG, which flew to LHR as recently as 10/23.
I assume they're simply not selling the F cabin on those routes, probably because it's not consistent.
So boils down to CGK<>HND and DPS<>NRT.
Bummer no true long-hauls.