Expected abundance of BH mergers, evaluated using Eq. (5) with Δz = 0.7, q_min = 0.1, and q_max = 1 (solid blue line). Also shown is the AGN bolometric luminosity function at z ∼ 3.4 plotted for two different values of the Eddington ratio η = 0.1 and η = 1 (dashed and dotted blue lines, respectively). The fiducial BH mass probed by the JWST dual AGN sample is shown by the vertical dashed red line.