It is similar to a cupid which is where they link two people together. However, it does not matter if they are on the same team or not. Being linked obviously means that whatever happens to person A, happens to person B. The two people will be notified that they are linked, but the person they are linked with will come up as anonymous until an ability is used on them and it will reveal who they are linked with. The Intermidiary does not need to be voted out to activate their ability, however they only get 1 link per round so they must use it wisely.