No such thing.
Before, I get screamed at about the existence of the auto-Squelch (which is its proper name), I’m aware of its existence. I’m just distinguishing the difference between Squelch and Silence.
The players have the power to Squelch. Only Blizz has the power to Silence. What’s the difference?
The Squelch duration is always the same. If Blizz agrees, it’ll remain or even increase the duration with a Silence. If they don’t, they just don’t apply a Silence.
All and all, it appears the people have spoken and have dub boost ads as spam. Respect them and don’t do boost ads 