Showing subform fields in Report Summary

Showing subform fields in Report Summary

I have a form that uses a Subform defined as a separate Form. The subform-form also has a list subform within it.
In my Report Summary, I want to display not just the list of items in the subform (which it does) but also the subform-subform.

Parent form -> sub-form -> sub-form items

Is this possible?