I came across this interesting article about the carotid space and how pressure on one section can be compression on all due to being contained in a common connective tissue boundary called the carotid sheath.
Excerpt from Abstract
“The complex anatomy of the carotid space within a small confined area is unique to the head and neck and allows for a vast array of pathology. This paper will review the anatomy of the carotid space from the skull base to the thorax, defining its borders at multiple levels, as well as its contents.”
Online article: Pathology of the carotid space - PMC