Illustrating collaborations is usually handled within a list or text table. Instead, consider using a more visual approach. This Power Chart shows how organizations in different geographic locations combine to accomplish tasks, but there are many more applications for this concept.
This chart tells the story through animation. The reveals are sequential for each new product/service development group and employ colors and leaders to help the audience make all of the connections. Be sure to review the flash and download the chart so that you may see how the animation scheme is formatted. It's a good one.