Leaders and managers have been dealing with this epic battle since the first person sold a product and someone else had to get that product to the customer. Operations (or finance, logistics, marketing, etc) thinks sales is living the easy life wine and dining clients and making hoards of money. Sales thinks operations could care less and never reads the damn order especially the extra "notes" that says "don't deliver before 10 AM." Both sides are just "waiting" for the other side to screw up so they can run to their leaders inside their silos and claim victory that they are the better army. Many of these armies have seasoned "bus drivers" just waiting to roll over their enemy when any opportunity presents itself. As this battle rages on over the years the casualties pile up. The challenge is many of the leaders of these armies don't even realize the amount of losses that are really occurring during these internal battles.