What does Value Stream Mapping help reveal in the Continuous Delivery Pipeline?

According to the SAFe DevOps Practitioner 6.0 study guide and handbook, Value Stream Mapping helps reveal bottlenecks to the flow of value in the Continuous Delivery Pipeline. This means that Value Stream Mapping helps teams identify and eliminate any activities or processes that slow down or stop the delivery of value to customers. The handbook states that "Value Stream Mapping helps reveal bottlenecks to the flow of value in the Continuous Delivery Pipeline."1 Therefore, Value Stream Mapping helps teams optimize their value stream and improve their delivery performance.