Audio and subs usually don't match for dubbed audio tracks (it's usually ok if you watch a French movie with French subs etc.). I have code that processes the Netflix audio with Whisper ASR, it works very well. Hopefully Netflix don't mind us adding this (my email is in my profile), I think we'll bring this online in a couple of weeks. If any other video provider is interested in having Language Reactor support their site, mail me.
Also, we're rolling out a 'virtual conversation partner' starting today: https://forum.languagelearningwithnetflix.com/t/chat-feature...