We explain to our viewers that our live lectures are a lot like a live television show taping.
The audience joins to silently watch, as the live lecture is delivered. Live presentations are recorded, with only the presenter showing. No one can hear the audience during the presentation, though we still encourage everyone to use the chat box to engage with those present, and drop any questions there are, to be addressed after the presentation ends.
Once the presentation is over, we open the session up to an exclusive Q&A, where the live audience can ask the speaker any question they have (not part of the recording) and even come up to the front.