There seems to have been previous attempts to integrate Zend with Symfony in the same project. I hear it can be done and has been done, but aside from a slide show linked below, the actual video accompanying the slide show is not freely available.
So does anyone know of good resources that explain such integration well? blogs, videos, whatever. I'll add whatever you post here for easier access to others in the future.
Resources I've found so far:
Edit: I should add if you've done this yourself before, can you also please post any tips (as little or lots) to help those who may want to try it.