It could simply be a missed scan.
What the heck you are right, it just surfaced in Brussels.
Still DHL's routing of packages makes no sense to me. For packages to Dutch addresses, Apple has a warehouse or logistics covering most of Europe in Waalwijk, close to Eindhoven. Things go to Brussels (European DHL hub) always regardless of the destination, then to Amsterdam (Dutch hub), then to a regional hub and then to the final destination.
I live about one hour from Eindhoven, still packages make a detour of hundreds of kilometers.
I still think it won't be here tomorrow.