It would depend on the type of tension. If this is an operational tension the Organizer role-filler can of course talk to the Communication role-filler or any other roles in any circle to try and get the tension resolved. If it's a governance tension (e.g. Organizer role-filler wants to add/change an accountability of Communication) then the Organizer role-filler would need to bring the tension to the circle X Rep Link, to process in the parent circle.
Do you have a specific tension in mind?