The two via ferratas Röbischlucht and Rongg Wasserfall merge directly into one another. You hardly notice it. There are representations in which the respective topo is shown next to each …
It's easily doable for any experienced hiker, as it's a well-prepared trail. Only when it's wet and has rained beforehand can it be a bit slippery in places. I think the "difficult" rating for this route is a bit overrated.