We have already descended this path a couple of times, but it didn't appeal to me because of two specific up-down intermediate sections, but it's not technically demanding at all, and it's also longer.
Because a year ago for unknown reasons-maybe you, Alessio, know why, they closed access to the old starting point, I noticed a sign right after the bridge over Rio Torto. Apparently they have restored the old path along the bed of this stream again. This way we avoid trudging on concrete, well at least most of that pleasure

About a quarter of a century ago

we descended there, but then below Viška planina I no longer spotted the turnoff to this path, because we always walked mostly on the road. By the way, an interesting access to Corsia is from the S nevea pass- Na žlebeh
