Set Parent Visibility to nested Child Visibility

Question

I have the following

  <ControlTemplate x:Key="RoundedTopPanel" TargetType="{x:Type ContentControl}">
    <Grid>
      <Border CornerRadius="9.5, 9.5, 0, 0" Padding="10" >
        <ContentPresenter/>
      </Border>
    </Grid>
  </ControlTemplate>

and then use it as

 <ContentControl Template="{StaticResource RoundedTopPanel}" Grid.Row="1" Grid.Column="0" 
                      cal:RegionManager.RegionName="{x:Static Config:RegionNames.Region1}" />

I want to bind the Content Control to the visibility of the unknown usercontrol that is added to the ContentControl. Is this possible in pure XAML?