Firefox is a great privacy focused web browser with Add-ons, otherwise known as extensions, that can provide additional functionality.
Metastream Remote is an Add-on that enables you to watch streaming video from services such as Netflix, Prime Video, Disney+ and others with family and friends remotely. We can continue to self isolate while enjoying movies with family and friends.
From the developer:
Visit https://app.getmetastream.com to create a session to watch streaming media with friends. This addon allows Metastream to control video and audio for synchronizing in a session.Browser tabs on app.getmetastream.com will send messages to embedded websites for interacting with media. This includes setting playback state (play/pause), the current time, and information about the page’s URL.