Conference 2-Way Audio possible via Web Interface?

Hello guys. Im using Blue Iris to stream video content to another person which is using the UI3 web interface as another user to view the stream. I am able to stream with audio to him because my camera a Foscam FI9901EP has an audio line in.

So my question is. Is it possible that he can also talk to me via the Web Interface?

Would be very helpful to get information about that. Thank you

This is not possible. The only mechanism I'm aware of which web browsers have for sending realtime audio is "WebRTC" which Blue Iris does not support. (Blue Iris will probably never support this. As I understand it, WebRTC server implementations are not easy to use)