This is the same technique I use for my jawline!!!Another tip, it's so basic it's easy to overlook: watch your blade angle on your neck. We tend to learn about blade angle on our cheeks, where it's easy to see. Take care that your (hopefully shallow) blade angle is the same on your neck, especially on south-to-north strokes, where the razor is upside down. It's easy to be too aggressive.
This is the principle behind bullfrogging, which we less-fat gents can use as well.
It allows me to do a side to side (ATG for me on my jaw) while allowing the whole blade to contact akin rather than just the small amount on my jawline. In essense it makes my jaw line disappear and I use it for XTG (s to n) so I can transition between neck and cheek without a drastic 90° angle!!!