It is most important to take control of your surroundings and minimize audience interaction when you are speaking:

The focus on minimizing audience interaction and taking control of your surroundings is particularly important when addressing a large audience. In this setting, maintaining control is essential to ensure that the message is delivered clearly and cohesively without interruptions or distractions from audience members. When speaking to a large group, it can be challenging to manage varying reactions or questions simultaneously, which can disrupt the flow of the presentation.

In contrast, in dyadic communication, the interaction is more personal and typically involves two people engaging with each other, allowing for a back-and-forth dynamic. Speaking extemporaneously refers to delivering a speech with little preparation, often incorporating audience interaction naturally into the delivery. When discussing a technical topic, while it can be complicated, the setting doesn’t inherently require minimizing audience interaction as effectively as addressing a larger crowd does.