You do sound old fashioned ;-) ... No, I understand your remarks but let's be glad Mrs Schadt isn't the victim of this situation. I think at Belgian court the good diplomatic relationships preside over the technical aspects. At least I hope so!
The Belgian royal & German presidential couple met a few months ago in Liechtenstein, at the summit of German speaking countries (where Belgium was included on Germany's proposal!) so it would be quite embarrassing if Mrs Schadt was treated with less protocol than she has been these past days.