Allow browser events to pass through Unity frame

I have a Unity application embedded in a larger webpage. The rest of the webpage is touch aware using the browser's built in touch events API. I want to make the Unity section touch-aware as well. I've figured out how to publish events from the browser into the unity application, but the events are not firing in the first place when I touch over the unity window.

Does unity have some method to ignore or pass-through events to the underlying browser frame?