Is there a Cart component method that would be the equivalent of LiveOrderModel.getInstance().getLatestAddition()? I am under the impression we can still use the CartConfirmationView in 2020.2 and looking to pass the model data of the recently added item to the cart.

I don’t think latest_addition is returned by the cart component.

This specific method should be added in SC 21.1 (Safe Harbor statement)

@Steve Goldberg Can we use CartConfirmationView as a child view within an extension or do we need to create our own CartConfirmationView?

You can't use the core code one. It is not on the list https://developers.suitecommerce.com/build-sustainable-and-stable-extensions.html#allowed-core-modules