I think that the file Display > Checkout > Cart is responsible for both of these views. The workflows is cart,login_address,shipping_payment_confirm_cart_status_fields,end and I think the first view is from the cart at the beginning, the second view is step 3.
My issue is on the cart view I wanted to change the wording for Final Total (in fact I wanted to change the field entirely to sub total) - I think displaying a claimed Final Total before proceeding to shipping choice page is misleading.
The problem I have is that as it appears both views come from the same file, if I change the Final Total to Sub Total it changes the Final Total on the 3nd screen too.