Addon:Deep Connections Gramplet
Similar to the Relationship Calculator, the Deep Connections Gramplet will find a relationship between the home and active people, if one exists. However, this gramplet will find all relationships.
This can take some time, as it thoroughly searches through all relationships. The Deep Connections Gramplet gives you a chain of people that form a related connection between the Active Person and the Home Person.
You can download this plugin by following the directions at Third-party Plugins.