title: How can I have two separate SAML applications login to an IdP without logging in twice?
body: <p>I have four custom apps (that are SPs), using Auth0 or OneLogin as my IdP.  In Auth0 I create a connector for each application.  When I login to one application and then open the other application, I get redirected to Auth0 to login again.</p>
  
  <p>Is it possible to log the user into my IdP (or Auth0/OneLogin) automatically on that second app without having to click the login button on Auth0, since they've already authenticated with Auth0?</p>
  
  <p>There is an unfortunate need to embed the second app into the first app and it's a poor UX to have the user login to the first app and then login again in the iFrame.</p>