Column density measured from CO versus the Eddington ratio. The blowout region is where radiation pressure pushes away the obscuring material (${\lambda }_{\mathrm{Edd}}>{\lambda }_{\mathrm{Edd}}^{\mathrm{eff}}$(N_H)), from Ricci et al. (2017). The dot-dashed line from Venanzi et al. (2020) indicates the limit where the AGN radiation acceleration balances gravity and IR radiation pressure dominates, giving rise to polar dusty outflows. The dotted line is an extrapolation of this limit to lower column densities, and the horizontal dashed line is the approximate upper limit for absorption due to dust lanes (Ricci et al. 2017). Yellow circles are the five QSO2s from Ramos Almeida et al. (2025) and purple squares are the Seyfert galaxies from García-Bernete et al. (2024a).