When using Align Connected Objects, is there any specific sequence used to order the objects?
Yes. Based on the options you select (i.e., fixed vs. existing spacing, all one side, etc.), netViz will try to position the connected objects as neatly as possible. If you specify that the connected objects should be moved to a fixed distance and as a result, connected objects would lie on top of each other, netViz will automatically spread out the objects. This spread logic is based on the when the object was placed on the diagram. The connected object created most recently will be closest, while the connected object created first will be furthest. See page 123 in the User’s Guide for a more detailed explanation.