Optical (red stars) vs X-ray bolometric (0.1−500 keV, navy blue points) emitted luminosities during the bright outburst of Swift J0243.6+6124. The optical V-band integrated fluxes have been obtained multiplying the monochromatic fluxes (converting magnitudes to fluxes with a zeropoint ZP = 3.631 × 10⁻⁹ erg s⁻¹ cm⁻² Å⁻¹) by the effective width of the filter (890 Å) and dereddened considering E(B − V) = 1.20 mag A distance d = 5.2 kpc has been assumed in the luminosity calculations (L = 4πd² × F). The times related to changes in the pulse profiles and the X-ray spectrum proposed by Liu et al. (2022a) and Doroshenko et al. (2020) are marked with blue and pink lines respectively. The gray dashed-dotted line was proposed as a critical time (MJD 58139) on both works (see Sect. 4.3 for details).