Capturing TNEW Login Session

Hi all,

I'm working on some functionality for our Drupal website.  The idea is basically to show or hide certain content based on if the user is logged into the TNEW site, which is a subdomain of our main Drupal website.  

Essentially, I need to capture the TNEW session within Drupal PHP sessions across the two domains.

Has anyone had success with this out-of-the-box?  Would this require use of the TNEW API?  I believe this would require some web server hosting configuration on Tessitura/TNEW's end if I can't make use of it as is.

Cheers, thanks in advance.