In one embodiment, a system comprises: a plurality of aggressor bus lines; and a plurality of differential pair bus lines that are located in relatively parallel close proximity to the plurality of aggressor bus lines, wherein at least two of the plurality of differential pair bus lines change location with respect to each other at a point that has a cancelling affect on cross talk from the plurality of aggressor bus lines, wherein the change includes cross over routing. The plurality of differential pair bus lines can convey differential clock signals. The routing of the plurality of differential pair bus lines is substantially parallel to one another before and after the change.