When Honda is seen entering the Phantom, the view is straight in, as though the ship is docked with its main rear hatch attached to the Broken Horn. All external shots show the Phantom with its belly affixed to the hull of the Broken Horn, not its rear.
When Ezra docks the Phantom with Vizago's ship, he leaves no way to pass between the two ships, since there is not a docking port on that part of the hull.