How to load another model in a dynamic segment template

Every ember documentation explains how to create a dynamic segment, and load the model data of that dynamic segment

I even recently discovered that there is no need to define the model in the route to be able to load the data, as with some ember magic, the model is automatically assigned to the dynamic segment

However what I cannot find an answer to anywhere is, how do we load different models in that dynamic segment ? I tried to use Ember.RSVP.hash({ but that did not do it.

Here is the stackoverflow question on it if anyone has an answer to it