Yes, the recoil of the combination event forced the new, larger black hole to zoom through the accretion disk, generating a large amount of energetic interactio

Yes, the recoil of the combination event forced the new, larger black hole to zoom through the accretion disk, generating a large amount of energetic interaction with the gas, with a large flare of resultant light, with the flare ending as the black hole escaped the accretion disk. They are predicting that as the main supermassive black hole pulls back the new black hole into the disk, a new flare will form.