Flow field in orbital plane, density [log10(g/cm³)] and velocities [10⁸ cm/s] from large (20 d) to small (d/10) scales. Left panel: BH-induced high-density spiral, aligned with the velocity field in the binary orbit co-rotating frame (black arrows; simulation frame velocities color-coded from red to white). Middle panel: BH accretion cone (A) with its leading (L) and trailing (T) edge, alimenting the BH courtyard (CY) via the disk-feeding region (DF). The boundary to the decretion zone (D) is in pink, strong shocks in red. Right panel: Zoomed-in image on accretion disk and feeding region. The velocities in the middle and right panels are in the frame co-orbiting with the BH (color-coded from brown to white).