Me and my friend saw this ridge and tried it for fun. We have no idea if or when this ridge has been climbed before. You can bail at an unnamed col after a short descent of an unnamed summit at 2720m. Most difficulties (II+ max) and fun are found in the first half of the route. Unfortunately the ridge does not reach the true summit of Becca Conge, only a sub-summit. You would have to walk around over steep scree to get to the summit . This route is more of a fun ridge climb far away from any crowds or glaciers.
From the Bivouac, immediately go SW toward a small rocky gully / slope and climb it just on the right on the grass. There is a cairn on this small col. Then scramble to the right to the ridge. There the first difficulties start. Go up some small tower and easier ridge scrambling with nice exposure until you have to climb some grassy slopes with some slabs that are difficult to protect. Then approach the large tower over a thin ridge and climb the tower that seems difficult but climbs fine. Arrives at 2720m. Then descend over easy terrain down to a col where you could bail by taking scree slopes back to the bivouac. Instead, we followed the ridge and climbed farther.First on loose terrain the we bypassed by climbing some steep slabs and then just fun easy hiking and scrambling on the NW ridge toward Becca Conge.
Descend on the north slope back toward La Lliée bivouac (F, I).