Final answer:
Herbert Pocket is not stunned when Pip confesses his love for Estella; he is already aware and cautions Pip, reflecting the complex first-person narration style.
Step-by-step explanation:
The answer to whether Herbert Pocket is completely stunned when Pip announces that he is in love with Estella in Great Expectations is False. Herbert actually advises Pip against falling in love with Estella due to her being raised by Miss Havisham to break men's hearts. This conversation occurs in Chapter 22, not Chapter 30, and at this point in the novel, Herbert is well aware of Pip's feelings towards Estella. Great Expectations is indeed a first-person narrative, and the dual narrative perspective of the adult and child Pip exposes the reader to the complexities of the protagonist's emotions and experiences.