Schematic view of the suggested scenario where propagating extended gas structures interact with the NGC 6334 complex, resulting in the formation or altering the properties of the filament systems MFS-warm, MFS-cold, and IFS (from left to right). These sketches are in the PP space perpendicular to the filament along the axes. The velocities of the different structures are indicated in the LSR frame according to the PV diagrams (Fig. 12). The shock front is indicated in the post-shock configuration. The left and right arrows (<< and >>) indicate the more blueshifted and more redshifted velocities, respectively, with respect to the velocity of the extended sheet-like structures. The velocity of the sheet-like structure is connected to the filament velocity through a velocity gradient. The ambient 5-field (indicated by the black lines) is parallel to the shock front.