Does HeyGen have the ability to a conversational avatar.

Hi, I’m exploring the HeyGen API and was wondering: does it support generating avatars that can respond to real-time events or questions — similar to how ElevenLabs handles real-time audio generation? I’m particularly interested in whether continuous or reactive video generation (e.g., for dynamic conversations) is possible, or if HeyGen avatars are limited to pre-scripted videos. Thanks!

I am looking to be able to do this for r ~20 minutes at most