I was booked in C on LH 3135 (SK 3621 - operated by LH) last week. At check in, the guy behind the EBG counter told me I couldn't use the fast track today since my (codeshare) flight to FRA was operated by LH. I asked him if he was sure as I could recall the SK site stating EBGs could use the fast track independent of ticket type. He said he was absolutely positive and that "LH is not paying for fast track in OSL, after all".
I hope my proficiency in Henrik Ibsen's language is good enough:
Fast Track gjelder for deg som skal til utlandet med SAS og har en Business- eller Economy Extra-billett samt EuroBonus Gullmedlemmer uansett billettype.
Huh?
(PS: I did use the fast track (just to prove him wrong). The Adecco super agent just swiped my DC/EBG card and said "have a nice flight"...
)