For me this is not a technique, but a method of how rings get join.
When making the rings and chains, it is how the rings get join. Not by any fancy join, but the order the rings gets join.
Ring 1 and ring 3 gets join through ring 2 (A). Ring 2 and ring 4 gets join through ring 3 (B). I can go on and on about what ring gets joined to what ring and through which ring.
In short rings 1-3-5-7-9-11 … gets join. Rings 2-4-6-8-10-12 gets join (C).