I made a flow chart of which Mastodon posts end up in which timelines!
So, you can see how each instance will have a different local timeline, and even a slightly different federated timeline - and you can see why the federated timeline moves so much faster than the local one, too.
@julloyart Oh fantastic, I'm glad it helps! :)
@cassolotl Wow, thank you. I had a question about this yesterday (got it answered since than) but that helps me understand it even better :)