Login into multiple Context with different domains (http_host)

Hello!

Is it possible to login into multiple contexts, when they have different domains?
So if I am using the login at Page A, I will also be logged into (Context B)

Context A (en): http_host: .domainNameA.com
Context B (de): http_host: .domainNameB.com

I do use &contexts=en,de in the Login call, but it only works when I use the same Domain(http_host) for both Contexts.

I also read that it should work with subdomains, but nothing about different domains.

Only one 8 Years old Reply from opengeek in the old forum, where he says that’s sessions are always domain specific.

Thanks

I have the same problem,
Any one know the answer?
RDG

As far as I know, this is only possible with SSO (Single Sign On).