How connected: in Siberia, very little connection. Maybe once a year the patriarch goes in to a village and trades for goods which then get traded amongst the different families/reindeer herds. Some families have never gone to a village, and others (the minority) go in every season except summer. In the Tavan Bogd (western Mongolia), I would say moderately connected as now almost all the routes of their goat/yak/camel herds cross a small village or at least a trading outpost. So at minimum two times a year the whole family is going to cross paths with a village when the animals and supplies are driven between the summer and winter grounds. Those towns are not big or developed much. They don’t have plumbing, or stores. A few have portable generators for electricity.