What is added exists only while the broadcast does, which makes your own schedule half of the experiment.
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What the order adds exists only while the broadcast is running. That makes the sample a test of two things at once: whether the delivery reaches your stream, and whether your own timing holds. If the two windows do not overlap, the result is unreadable and the reason sits in the schedule rather than in the delivery.
Take the reading at the moment you start speaking and again a few minutes in. The number at the end tells you almost nothing, because by then it has moved several times for reasons that have nothing to do with the order.
You learn that the route reaches your stream and that the figure appears where you expected. You do not learn how a busier room changes the way people behave once inside, whether a fuller viewer list pulls in anyone scrolling past, or how any of it holds across a longer broadcast. Those need a scale a demonstration does not reach.
Short answers to what people ask most before ordering.