Dawkins is erroneous.
From Gray's Anatomy:
“As the recurrent nerve hooks around the subclavian artery or aorta, it gives off several cardiac filaments to the deep part of the cardiac plexus. As it ascends in the neck it gives off branches, more numerous on the left than on the right side, to the mucous membrane and muscular coat of the esophagus; branches to the mucous membrane and muscular fibers of the trachea; and some pharyngeal filaments to the Constrictor pharyngis inferior.”
A direct nerve in itself would be an error, as a singular nerve that also supplies input to organs that have predetermining factors on laryngeal operation creates a natural time delay. Basically, if it was a straight shot, the only sounds we could make a a bunch of windy, breathy squeaks.
2 C 5:6-8 Jakob Murphy aka themaninblack