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.
But does A and C have to connect each other in this case or wouldn’t this be necessary?
@Roslavets @poliverso All instances of the fediverse, once activated, begin to search for each other. Depending on the number of connections and interactions in common, it may take more or less time. But they continually send out small inputs, like grains of pollen wandering through the air 😅💐
That is not true.
Yes. It’s all interoperable.
But does A and C have to connect each other in this case or wouldn’t this be necessary?
Lemmy servers don’t need to connect to each other to work together. You can always search for a Lemmy link on your server and it will get the post or sub, so you can comment and like and sub etc.
On mastodon someone from your server (or you) needs to follow a person for their toots to arrive at your server. You also can search for a link to a toot by them and your server will look up their profile etc so you can follow them. Boosts work as you would expect, someone you follow boosts something from a person c on another server, but you see this toot since you follow the person that was boosting it.