In the current Manage duplicate tool you have the option to merge or reject suggested duplicate.
We often see suggested duplicates being the same organisation but separate legal entities with the same domain, or often same company in separate countries (company.se and company.dk). These should not be merged as they have their own VAT ID, but rather associated to map out parent/child companies.
It would be so much more efficient with a third CTA to associate company-company directly from the tool, so save time and help map out the correct account overview.