That's why I was asking.
Our widener would only go to 3 feet, and we had no extensions to go on it to work wider. However, our smallest paver would extend out 6 feet per side. We used it to pave sidewalks while running along the road beside the curb.
Not sure if they had something rigged up to keep all of the flow to the box. I only laboured for a short time before I got moved up to the loader at the plant.