Enterprise OIDC not showing up in login page

I am linking two Auth0 tenants using OIDC.

I have established the connection to the second tenant, but am now expecting a Login with OIDC description to show up on the login page. The connection is enabled for the application and the try button directs to the tenant.

What am I doing wrong, or how do I add in my login as a custom button in the login page.