As per Geronimo's link, which was last edited yesterday, it is quite obvious XM Canada and Sirius Canada are not one company, but it appears the CRTC will be approving a merger between the two in the future. Hence they have not merged. And just because they are one company, does not mean they can break contracts. For example, XM is the official and only satellite radio provider of Major League Baseball. That's what the contract states and the MLB is not caving, so the MLB will not be heard on Sirius until the contract is up. Clear Channel content is exclusive to XM. Clear Channel was an initial investor in XM and was guaranteed a certain amount of bandwidth on XMs satellites to broadcast content. The two services have many unique things about them, since a they do a lot that is not in house, and a lot of things are not up to them.
As far as HLN, is it really that big of a deal? CNN just decided to rebrand the channel, after all HLN stand for what? I have a relative who still refers to HBO as Home Box Office, and we all know what he's talking about. Come to think it, I think the EPG abbreviation on TW Cable here is still HDLNE. There's more important things to be concerned with then stupid stuff like this.
And I can't say I listen to channel 184 but it used to be weather alerts and a activation channel.