There is also another path between the two "floors" that turbo hiked.
I went from the direction of Ingota, where there's a bridge over the scree in one part and a cabin on the other side. Behind the cabin, a steep path climbs up, which is easy to follow at the start, but later somewhat harder in places.
The start of the traverse is somewhere at the height of Aka - you climb up there along the ridge on the right bank of the stream. The path spectacularly traverses the S slopes of Rutarski Vršič, somewhere between 100 and 300 meters below the ridge. It's not very demanding, but you need to be careful in a few places so you don't slide away on ball bearings or trigger a larger piece of rock that day.
The end is above the waterfalls of Beli potok, the path leads to a small ridge where there are quite a few trees downed by ice. The path goes higher, probably towards PP, but I went down the slope and came out exactly at the bench above the waterfalls.