No, you are definitely not an idiot; rather, you only know the customs of your bank, your employer, and you should - if you want to help independently and based on the market - make this clearer, because these customs, which I would call disclosure criteria, are so different that you cannot know them all - unless you are a financing broker.
Therefore, it does not have to be only the way it is with you, and it read like that; accordingly, I, as an independent broker and former Commerzbank employee, correct it so that the impression does not arise that it is only the way it is with you.