Heya! Just wondering, can you check who your approach controller was? I controlled approach there for about 4 hours on that day, im not sure but I might have a very good screenshot of your landing, let me know if I was your controller and ill look into it :)
Not necessarily. It all depends on the winds. I was flying a 106kt tailwind at FL300. That’s a good efficiency on that oceanic track which I flew. Higher altitudes don’t always mean more efficient. You can see this if you look at prognostic charts on Aviation Weather Center.