Add `checkout-ui-extension` to checkout "Review" page / step?

[stats_marketing]

I am trying to add a simple "Notes" section to my Checkout sections / pages.

I have successfully added it to the 3x sections in the drop-down utilizing the new `checkout-ui-extension` for apps:

- Information page

- Shipping page

- Payment page

However, I need to add it to the "Review" page because the way we have our store set up it automatically sends them to the "Review" page (Shipping is free and they are on Net terms).

The url of this "Review" page looks like this: 

https://mystore.myshopify.com/checkouts/c/abcd12345/review

Is there a way we can add Checkout Extensions to this page / step of checkout?