Molecular and ionised gas kinematics towards the compact H II region (marked with a cyan circle in Fig. 6). Shown as the solid blue and orange lines are the maximum ALMA (ACES) HNCO (4–3) and H40α specta taken from a ~1 pc (30″) aperture around the H II region (to include both the ionised and associated molecular gas; the same size as the cyan circle in Fig. 6). We show that the higher velocity component (~100 km s⁻¹), which is unassociated with the ring-like structure, is coincident with the ionised gas from the H II region (no significant H40α emission is seen within the ring-like structure’s velocity range).