Schematic view of the evolution of the ionized gas structure. In the initial stages, the expanding radio lobes form a bubble of ionized gas (red clouds). When the radio source has escaped the superdisk, the remnants of the bubble are still visible as filaments around the base of the lobes, but the main structure is a rotating disk. The final state depends on the orientation of the superdisk with respect to the radio axis: when they are perpendicular to each other, a linear rotating structure is present; whereas, when the jets form a small angle with the superdisk, clumpy line emission with a complex velocity field is seen, indicative of ongoing strong jet-cloud interactions.