Hide connection buttons from new universal login without customizing template?

Is it possible to hide connection buttons from the new universal login screen without customizing the template HTML?

I would like to use new universal login for only Auth0 username/password login, while transparently bouncing users to enterprise SAML / Azure AD connections (by passing connection option to Auth0Client’s loginWithRedirect).

I see a checkbox in the SAML settings to hide the button (under “Login Experience”), but it is disabled. This checkbox does not exist under Azure AD config.