Evolution of the Swift/XRT count rate, hardness ratios HR1 and HR2 (blue and crimson points, respectively), Comptonized fraction f, and BMC normalization during 2007 and 2023 flare transition of NGC 1566 (shown from top to bottom). In the very bottom panel, we present an evolution of the photon index Γ = α + 1. The decay phases of the flares are marked with blue vertical strips. The peak outburst times are indicated by the arrows at the top of the plot. For the three bottom panels, NuSTAR and XMM-Newton observations are indicated with stars and circle points, respectively.