If it was made by Art Seymour, do Italian words apply? From a glossary of Venetian glass posted earlier:

Zanfirico – A type of glass cane made by assembling a bundle of different coloured rods and heating them until soft. The bundle is then attached to two metal pontils or metal rods before being drawn out and elongated. During this process the bundle is twisted to produce a spiral pattern. This process was originally known as vetro a retorti, but was renamed in recognition of a Venetian dealer called Antonio Sanquirico, who in the 1830s encouraged the revival of this and other traditional techniques on Murano.

http://www.bigbeadlittlebead.com/guides_and_information/venetian_glass_glossary.php

I'm not sure what the Italians would call my process. I call them compound cane. I think the technique you mention is for solid finished rods which are then later picked up for decoration in blown ware, not made hollow for bead cane stock. I trained with Mike Nourot who learned Italian glass blowing techniques at Veninni in the early 70's. But we never made this type of cane. The only canes we made were for use in full murrini vases Micheal made. I only decided to make these beads in around 2014 and I have no knowledge of Italian descriptives. The Italian beads made with compound canes similar to mine usually have the patterns mixed up and smeared a bit and have no core cane in the pattern. Adding the core cane and keeping the canes well organized and not letting the patterns get smeared make these canes very difficult to create. The process requires a tremendous amount of waste of material and a great deal of time at the furnace, but the finished beads are worth that loss and all the effort to me.

These beads open the chevron cane at the "atomic level" where you can see all the detail. From someone who has cold worked a bounty of chevron cane, including some of Arts, these are top examples of chevron mastery.
-Alan

As always Art....... The best of the best the top of the top.