Hello. You did not present the text to which this question refers, which makes it impossible for it to be answered accurately. However, I will try to help you in the best possible way.
The textual structure chosen by a speaker impacts the way the text is being received and understood by the reader. This is because the elements of formation of the text, the themes, the supporting details and the whole diction must be based on this structure, which impacts how the textual information will be linked to the reader and how his or her textual perception will be established.