Outflow maximum velocity normalized by the bolometric luminosity (in units of 10⁴⁵ erg s⁻¹) versus column density adapted from Tozzi et al. (2024). The color coding and references are as in Fig. 1. Type 2 AGNi are marked with a black circle. COS1638-A (Type 1) and COS1638-B (Type 2) are connected by a dashed black line since the bolometric luminosity for this dual AGN was obtained from X-ray data integrated over the two components. COS2949, the only COS-AGNi at z≃2 and for which N_H is constrained, confirming its high-obscuration, is marked with an additional white dot. We note that SUPER AGNi (Kakkad et al. 2020; Tozzi et al. 2024) cover the redshift range z = 2−2.6 and GA-NIFS AGNi (except COS2949) span the z = 3.5−4.8 range (from Parlanti et al. 2024, Perna et al. 2025a and this work).