Oculus Rift S, implementing AR

Hello, I'm using Oculus Rift S, and I have a question implementing AR environment in Unity.

Is there any method to show the environment around user on Oculus Rift S screen, and render VR objects on it?
I would be happy if I can get raw image data of front cameras(which are equipped to provide passthrough mode). 

Thank you a lot for reading my question.