The structural timeline lists the series of activities that the narrator engaged in so as not to be made a joke of. From the evening till morning he was restless but the precautions he took still resulted in a scene that caused the drama he was avoiding.
A structural timeline indicates the order in which the events in a story occurred. From the evening that the narrator arrived in the story, "An Uncomfortable Bed" till morning, he was suspicious of everyone.
He took precautions that resulted in the fall of the valet that came to serve him. The food that spilled on his face was a comedic ending.
So, the series of precautions that he took ultimately led to his embarrassment.
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