I'm heading to the Monzino Rifugio and wondered if a bus runs along this valley?
https://arriva.it/app/uploads/sites/3/2022/06/Val-Veny-Courmayeur-Giugno202... gives you the timetable for June at least ...
It does. Very efficient. Leaves from square in. Courmayeur. More frequent in July/August. (Also cars discouraged at times in Val Vent).
Thanks