The system doesn't unmute you immediately: > Once a representative is identified, Google Assistant will notify you that someone’s ready to talk and ask the rep

The system doesn't unmute you immediately: > Once a representative is identified, Google Assistant will notify you that someone’s ready to talk and ask the representative to hold for a moment while you return to the call. So you can go use the bathroom while you wait (if you're quick about it, or you're willing to risk the representative hanging up on you).