I guess that your entities are associated. If so, you can add additional nested data containers (dataview, listview, datagrid, templategrid) to your page and show the associated data inside of the new container.
The choice which container to use depends on the type of association as well as on the question how you like to display your data.
If your datastructure is too complex to use retrieve by association or xpath, you can use a datasource microflow for your new container.