Yes you can link JIRA Hosted and a Confluence in another domain. You can follow our official documentation: https://confluence.atlassian.com/display/JIRA/Linking+to+Another+Application?from=VYH8DQ
Just use the OAuth authentication in this case.
Hope it helps,
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
We're bringing product updates and pro tips on teamwork to ten cities around the world.Save your spot