I brewed at a brewery in Virginia. The brewery's owner worked things in such a way that he owned the brewery, but I think someone else owned the distribution company - on paper anyway. It was managed by someone other than the owner/manager of the brewery, but the owner/manager maintained control over the distribution activities. You can do it, but it'll take some legal wrangling to do it correctly and not raise eyebrows. The post by Neckbone seems to be workable under this model. The brewery I worked for actually sold the kegs to the distributor and, of course, the distributor sold the kegs to retail accounts. The distributor company worked out of the brewery's warehouse, so it would be feasible to occupy the same grounds as long as you do some fancy stuff with the lease. The way it was in Virginia (here in PA, too) your brewery can't even own the building that the distributor works from, but if you're renting the space from a third party, you might be able to work the lease and split the space so that the building owner actually leases two spaces in the same building to two separate companies.
Mike Hiller
Brewer, Raconteur