"Elsewhere" turns out to be a combined USB-C, headphone jack, and microphone assembly—which we dutifully peel out of the chassis of the MX6.

A small amount of adhesive secures the cable to the chassis, but it presents no problem for our teardown engineer.

Upon inspection, we find antenna connections on the bottom of the cable, as well as on the bottom of the motherboard.

Manufacturers seem to be in competition to cram as much as they possibly can onto the charging port cable. (Which means a pricier repair when your port eventually gets loose.)