Why does chaucer place this exchange near the conclusion of the section?

on most Gothic works, you would most likely find a scary and horrifying setting that makes the readers mood of fright or sadness. For example, the book, "The Strange Case of Dr. Jekyll and Mr. Hyde" uses acts of fear and is considered a Gothic work. It was based on a nightmare.Also they have to look scary to the reader. for example zombies are copse who have rotten flesh and don't die. They also have to do smomething scary that might frighten the reader. For example  Dracula he sucks blood out of people at night