I think that the HCAA, started an investigation about those incidents, but as usually, they have being "digged".....
If this incidence was made by OA, then I can tell you, that there would be a grate "negative" publicity!!
Some years ago, when OA planes diverted from LGTS, due to RVR, below cat1, they used the autoland "feature" of the 737's, and they landed, without any "problem", from HCAA!!!!!!!
(even after reports).
I hope that they will be lucky, in the future, as they are untill now, because an accident will have negative influence not only for their company, but for all others flying in Greece, as well as turism..., which is the number one "money buissness" for Greece.