Didn't think of that, but it wouldn't surprise me.
I do remember that OWN is some sort of venture with Discovery Networks, with Discovery providing the bandwidth access formerly known as DiscoveryHealth.
I don't remember/know if they tossed any cash into the deal, but I got to believe they promoted it in-kind on other Discovery channels.
I vaguely recall seeing some sort of commercials for it.
OWN dumped the channel's first president (a friend of Oprah) last spring, after about four months of operation.