What are the various ways in which a speaker can make out whether the listener is receiving the message being communication?

A speaker can gauge listener engagement through verbal and non-verbal cues, such as nodding, facial expressions, and eye contact, which indicate attentiveness. Asking questions or encouraging feedback can also help assess understanding and interest. Additionally, observing the listener's body language, like leaning forward or crossing arms, can reveal their level of receptiveness. Lastly, the listener's responses and interactions during the conversation provide direct insight into their engagement with the message.