At the image down below we observe dual hotspots separated from vertical streaks of plasma. Both seem to be separated elements of new black hole physics Herbig Haro systems.
Now both hotspot black hole seem to be consumed by the central black hole, but the plasma streaks are assumed to leave to feed one of the so called Fermi bubbles, at both sides of the Galaxy disc.
Original article of Galactic Center Excess (GCE): https://phys.org/news/2020-07-dim-sources-galactic-center-excess.html
see below: paired black holes ( former Herbig Haros) ready to be consumed by Sagitarius.
New black hole physics: