Hi Fedrick,
Just take two another listview or datagrid on the page -> DataSoucre select from database in one listview for one entity and in another listview for another entity.
Mohammad is pointing you in the right direction, but if I can add to that..
If could also be a dataview an inside the dataview a listview/grid (from database).
Calling a microflow from within the context of the listview/grid, you should then be able to use the two objects as parameters, and you could eg create an association between the two or us attributes from both