So, is it working off some kind of always-in-sync (assuming a live network connection) manifest? I confess, I did not watch the video, and only briefly skimmed

So, is it working off some kind of always-in-sync (assuming a live network connection) manifest? I confess, I did not watch the video, and only briefly skimmed the announcement. Edit: I'm asking a genuine question of real technical interest here. How can this be implemented with no latency and real file sizes immediately available for inspection, while taking up no disk space? I went back and read the announcement again, and there are no hard details I can see that I missed in my initial skim. There has to be something stored locally, right? Hell, I'm running gigabit fiber here, and I still notice latency in the CLI for anything that requires a network connection. Perhaps I misunderstood the parent?