The interview went like this: the whole family had their photos and biometrics taken and was issued ID cards. After which, the official in charge basically told them: look, the situation is clear. You are from Gaza and cannot go back. Your status as refugee is straightforward and we might not even bother with a second interview. Welcome to Belgium, see you in five years when you apply for citizenship.
The language was no doubt more formal (I was not there), but that was the gist of it.
7/