What is the best way to create a webinar for a unity-WebGL app?

I have a webinar external service I wish to link my app to. the app is a Unity WebGL app so rendering the whole website on the browser resources seems undoable.

1 way of dealing with it was to stream the video to a texture and put it on the screen while at the same time opening a socket to the webinar for the text responses. I think it can work, but it looks like "cheating". Is there a better way you can suggest to me?