The attached pdf file provides you a visual plus an exercise you can use with two groups discussing a pending mergers, collaboration or other joint work.
1 to 10: What Merger Looks Like 
(2 page pdf file)
For more information about successful collaborations, mergers and other partnerships click here .
Also, find this Planning Document : A useful form to help you to decide and record all of the details you need at your meetings.
And, don’t forget the Audio  –where you can learn how to Raise the Bar on your partnerships and group experiences, including mergers.