Originally Posted by
seb_sh
I don't think that's the limitation because they show replays from on boards which were not shown live, so it means they have the video data already in the tv control center, where they can scrub through it and mix it in the main feed. If this is the case then it's nothing special and they could do what every other series does, yes those are on circuits but no it doesn't matter, if you have all the videos feeds it's exactly the same, circuits don't have data centers built into them either!
They could even stream it on free services such as twitch or youtube, but then they can't paywall it. So it's most likely a costs thing, since they then have to develop the website/app with these features themselves (a hard task for the team that developed the app with no sound control!) and pay for some service (like AWS) or own servers in a data center in order to broadcast at scale on the internet.