Although the position of the number is (obviously) under the control of the platform operator, so could appear anywhere, for any amount of time, if they were so

Although the position of the number is (obviously) under the control of the platform operator, so could appear anywhere, for any amount of time, if they were so minded. I wouldn't like to bet against the number appearing right in the centre of the screen for a fraction of a second, if there were any particularly high-value programming being illegally streamed.