• If instance A is connected to instance B, and instance B is connected to instance C, then it is highly likely that instances A and C are connected. But, beware: it is possible that instance A has defederated instance C (for reasons of moderation or incompatibility between the two instances: for example, an instance A of a religious nature and an instance C of a pornographic nature; or a 'instance of intelligent people and an instance of the US trash right). In this case, the two instances A and C will not be able to communicate with each other.