They don't mean not catholic, the tree shows not-protestant not-catholic as a pathway. It's a weirdly phrased question since it doesn't implicitly assume you ar

They don't mean not catholic, the tree shows not-protestant not-catholic as a pathway. It's a weirdly phrased question since it doesn't implicitly assume you are christian, but it sounds like it does. And it doesn't clarify if it is asking about beliefs, or is a backdoor ethnic group classification, i.e. are you "culturally" protestant or catholic. I went to a protestant church as a child even though my one parent was an outspoken atheist and my other parent has now become atheist.