Listening comprehension is an interactive process that involves both bottom-up and top-down processing. It depends on the listener's existing knowledge (schemas) to interpret what is heard. Traditionally, it was viewed as a linear bottom-up process, but it is now understood that both bottom-up and top-down processes interact. Key factors like text function, features, processing load, and oral language features contribute to difficulty. The listening lesson involves pre-listening, listening, and post-listening activities focused on perception or comprehension.