@shrikar Does your application consume SAML?
If your app consumes SAML and you set up a Google social connection, we’ll do OIDC for the Google authentication interaction but then we’ll consume the id_token from Google and send SAML back to your application. But you don’t have to use the “built-in” Google social connection.
As far as configuring against a Google SAML IdP, if you set that up as a generic SAML connection it should work the same as talking to any other SAML IdP. Our default is to return OAuth2/OIDC after the SAML interaction but we can operate as a SAML IdP and return SAML to your application as well.
If you tell me a little more about your setup and use case I can point you at the right resources–I’m fairly certain we can get this working for you.