Blog Module - Accessing Query Strings / Request Parmeters

silverstripe/cms Version: 4.1.1
silverstripe/blog Version: 3.1.1

I’m using the Blog Module and am trying to access access query string / request parameters on the main Blog page type it uses.

I can access the request parameters on all other page types (including Blog Post) by dumping them in the index method inside PageController:

    public function index()

But the Blog page type doesn’t display them.