Contact center agents commonly have dissimilar levels of skill for a particular topic or ability. Often an expert is available to help lesser-skilled agents, but such experts may not always be available. Automated systems and methods are provided that allow for an agent-customer interaction to be monitored and, when a question is present, identify a best-matching knowledge unit to address the question. With the knowledge unit identified, a prior communication portion associated with the knowledge unit is then presented to the agent, such as via pop-up message, whisper voice message, etc., to allow the agent to have the benefit of the knowledge of the expert to answer the question without engaging the expert.