Is Trump giving CNN the cold shoulder?

Is the White House purposefully keeping its officials from appearing on CNN? Neither President Trump's special consultant Kellyanne Conway nor Press Secretary Sean Spicer have hit CNN's Sunday morning news talk shows such as State of the Union in the past two weeks. Meanwhile, both of them, as well as Vice President Mike Pence and Chief of Staff Reince Priebus have appeared on other major networks' shows during that time. Spicer denied that CNN is being frozen out, when asked about it recently.