So what’s going on here? Is Jesus deaf, senile, or just not listening?
...or did the author jumble his paragraphs up?
From Helmut Koester's classic work Ancient Christian Gospels (1990):
Another aspect of the question of the integrity of the extant text of this Gospel concerns the order of its chapters and sections. Major disorder exists in two instances. The first concerns the sequence of chapters 4-7. At the end of chapter 4, Jesus is in Galilee, at the beginning of chapter 5 he goes to Jeruslem, chapter 6:1 says, "And after this Jesus went to the other side of the Sea of Galilee," and 7:1 reports that Jesus left Jerusalem and went about in Galilee, because the Jews were seeking to kill him. Moreover, John 7 continues the discussion of the theme of judgement which had been initiated in chapter 5. If the order were chapters 4, 6, 5, 7, all these difficulties would be removed.
The second major disorder is apparent in John 14:30-31. At the conclusion of this first part of the farewell discourses Jesus says: "I will no longer talk much with you, for the ruler of this world is coming. He has no power over me, but I do as the Father has commanded me, so that the world may know that I love the Father. Rise, let us go hence." But it only in 18:1 that this command is followed by an appropriate action: "When Jesus had spoken these words, he went forth with his disciples across the Kidron valley where there was a garden." In spite of the clear "Rise, let us go hence" in John 14:31, chapters 15-17 continue the farewell discourses. It has been suggested that chapters 15-17 are a later interpolation. But in language, style, and content these three chapters belong with 13-14. It is clear, therefore, that they are not in the right place. Chapters 15-16 may have followed John 13:34-35 because 15:1-17 is a commentary on the commandment to love each other, and 13:36-38 seems a good continuation of 16:31. This leaves John 17, the farewell prayer of Jesus. No satisfactory solution has been found for the placement of this chapter. Bultmann suggests to place it after 13:31a, i.e. after the designation of Judas and before the statement "Now is the Son of Man glorified". That John 17 was added after the displacement of chapters 15-16 had already occurred, is also possible because chapter 17 is characterized by a theological interpretation of Jesus' departure that differs markedly from the farewell discourses in chapters 13-16; its orientation is more explicitly Gnostic. (p. 249)