It is a "joke" if BMW-Sauber have not now decided to formally drop its protest against the legality of diffusers.
That is the claim of Williams' technical director Sam Michael, several days after the Court of Appeal said controversial rear diffuser solutions are fully legal.
That appeal, however, related only to the protests lodged in Australia by Ferrari, Red Bull and Renault. BMW's appeal was made a week later in Malaysia.
"That's a joke isn't it?" Australian Michael said in Shanghai, when told that BMW's appeal is formally still outstanding.
Theoretically, the Court of Appeal could be reconvened if BMW - represented by a lawyer at Tuesday's Paris proceedings - presses its case, despite Renault and McLaren now also fitting 'double diffusers' to their cars.
Michael said BMW pressing its appeal might also anger F1's governing body.
"I would say that if they wanted to take that protest again they would run a very high of getting charged with being frivolous. The court would sit there and say 'we saw you last week'."