Efficiency of joint detections and distribution of inclination angles of BNS mergers. Left panels: efficiency of joint detections as a function of redshift for ET-Δ in each network configuration for both KN (hashed) and KN+GRB (solid) histograms. Right panels: distribution of the inclination angle, ι, for each network configuration indicated in the legends of the left panels. The plots show all the detected (GW) events with a sky localisation within Ω₉₀<100 deg² for ET alone, Ω₉₀<40 deg² for ET+LVKI and ET+1CE, and Ω₉₀<20 deg² for ET+2CE (as used for Fig. 11), the events followed-up as within the Rubin footprint (fp), the corresponding KN detections, and the KN+GRB detections. The plots show the results obtained for the BLh EoS and the uniform NS mass distribution using the 1ep strategy.