Issue with fetching data from an array of references and non-references in a groq query.

contentLoggedIn[] -> {
    _type == 'staticSlider' => {
      _type,
      _key,
      textIsCentered,
      textColor,
      header {
        headline,
        body,
        callToAction {
          text,
          link
        }
      },
      items[] -> {
        title,
        filterUrl,
        urlSlug,
        image {
          "asset": {
            "url": asset->url
          }
        },
        description
      }
    },
    _type == 'dynamicSlider' => {
      _type,
      content
    }
}

{
  name: 'contentLoggedIn',
  type: 'array',
  title: 'Content for a logged in user',
  description: 'Create, add and order the content of this landing page.',
  of: [
    {
      type: 'reference',
      title: 'Reusable Static Slider or Banner',
      to: [{ type: 'staticSlider' }, { type: 'banner' }, { type: 'twoTileBanner' }],
    },
    { type: 'dynamicSlider' },
  ],
},

{
  name: 'dynamicSlider',
  type: 'object',
  title: 'Dynamic Slider',
  fields: [
    {
      name: 'content',
      type: 'string',
      title: 'Dynamic Content',
      description: 'Choose what dynamic content to display.',
      options: {
        list: [
          { title: 'Popular items', value: 'popularItems' },
          { title: 'Favourite items', value: 'favouriteItems' },
          { title: 'Recommended items', value: 'recommendedItems' },
        layout: 'radio',
      },
    },
  ],
}