How does the dialogue between Dr. Heidegger and his
guests increase the tension in this section of the text?

The dialogues create a sense of humor.

Explanation:

Dr. Heidegger invites his elderly friends home to make a strange study. he gives them each plain water with old wethered rose petals in it.He tells them that they are rejuvenated by the fresh blooming flower. he tells them that it was from the fountain of youth. He tells them to make the mistakes that they did earlier. His friends believe that and wanted to wrestle with each other and behave like fools.

To be honest i really don’t know but ask some one else they will tell u