Apple and Netflix have seemingly managed to find some common ground and strike a partnership for integration in the Apple TV app. Some users in the US are starting to be prompted to connect their Netflix account to the Apple TV app on their devices.
After doing so, Netflix originals are then able to be added to their Watchlist inside the TV app, and appear in Continue Watching. However, the integration does not seem to be complete just yet, so it’s probably still in the process of rolling out.