Mapof six different velocity bins of the main CO isotopologue, highlighting high-velocity gas at >5 km s⁻¹ from the systemic velocity (V_lsr ≈ +3 km s⁻¹) of the protostars: absolute velocity difference of [5,7] km s⁻¹ in cyan and orange contours, of [7,9] km s⁻¹ in black and darker orange, and of [9,11] km s⁻¹ in blue and red. The lowest contour level and step to the next contour is 1.0 Jy beam⁻¹ km s⁻¹. The 0.87 mm dust continuum is shown in grayscale. The arrow indicates the slice for the position-velocity diagram shown in Fig. 7. The position of the water maser spot at V_lsr = +6.1 km s⁻¹ (Dzib et al. 2018) is marked with a red circle with a yellow outline, ~1′′ west of source A.A linear scale indicator is plotted in the bottom right corner, and the size of the synthesized PILS beam in the bottom left corner.