We need to find an example of a flow chart used in an interdisciplinary graphic design process. Here are some random ones that don’t fit the bill, but it’s a start.

This medical flow chart shows tracheostomy decanulation in adults.
http://apps.einstein.br/revista/arquivos/PDF/365-Einstein%20v6n1p1-6.pdf 

This funny chart by julianhansen.com charts the process of picking a typeface. This is not a functional chart, it’s more of a statement on the barrage of typefaces out there.