I don't know about "need", but it's certainly common to reach out to them... But that doesn't mean that they respond quickly. Google does not have a rep for reliably getting back to people quickly or even at all, and when they do get back to people, they very often just say they can't comment, because there's no way for the people handling the press contact to reach a person who would know what was going on in a predictable manner. (Yeah, that sounds stupid. It is. And yet, nonetheless, you can regularly find that no one at Google can figure out who owns something or knows why it's the way it is.)