This chart uses the dependency wheel series with bidirectional link data (`weight` and `weightTo`) to create a chord diagram. Each ribbon connects two countries: its width at the from node is the export volume (`weight`), and its width at the to node is the return flow in the opposite direction (`weightTo`). Compare this with the dependency wheel demo, where links only define `weight` — ribbons keep the same thickness on both ends, which suits one-way flows. Here, the data are illustrative cross-border electricity trades (GWh); Norway is highlighted in the colour palette.