One of the consistent themes in IT is the disconnect between the IT department and the business. There often develops a "People's Republic of IT" which tries, vainly, to lay down policies and pretend that it should be in charge of the important decisions and that "its our way or no-way" is a reasonable approach to take. Some organisations aren't as extreme as that but almost every company I've every worked in, or with, in my whole career missed a basic fundamental point about how people collaborate.
Simple eh? When people collaborate and work together they work person to person and interact with each other. Now the real challenge is to make that effective, sure you could have a phone conference or a meeting or a quick coffee and for some bits that really can work.
But if you have something where its critical that IT and the business are working in close step and working together to deliver things then there is really only one solution.
Again, pretty simple but something that IT folks seem to shy away from. In the book I cover how different services require different delivery models, and for some of these its essential that business and IT become one team. Sometimes document based communication is fine, sometimes a phone call or a meeting will do, but as a basic part of operations IT should be part of the business, not a people's republic.
If you need to move closer to your business, mix up the chairs so IT sits with the business not on its own.