More than one neighbors on a side of A terrain.

Is there a way to have 2 terrains of equal sizes be neighbors to a terrain twice there size on the same side?

Also, does neighboring 2 terrains of deferent resolution work?

I don’t think so, simply because when you set neighbors you specify one terrain per side. If you tried to set the second terrain I think it would override the first. That’s just a guess though. I suggest testing it yourself.