using ng-content in ng-template

Question

Is it possible to use <ng-content> (and its select option) inside a <ng-template> or does it only works within a component ?

<ng-container *ngTemplateOutlet="tpl">
  <span greetings>Hello</span>
</ng-container>

<ng-template #tpl>
  <ng-content select="[greetings]"></ng-content> World !
</ng-template>

The above code does just render World ! :(

Here is the live example