Merging two content types in a view

In Drupal 7, I have the following content types:

• Project (which has a field collection of milest开发者_运维百科ones which has a field collection of tasks)
• Bugs/Requests

Is there a way to list all the "tasks" by themselves and bugs in one view?

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I'm not very sure about this but you can use

http://drupal.org/project/nodereference_field

reverse_node_reference module enhances views with reverse relationships for node reference fields.