Results of the rotation analysis performed on comoving targets to KELT-20. Left panel: light curve of the star as measured by TESS and Kepler. Middle panel: Lomb–Scargle periodogram of the light curve. Right panel: phase-folded light curve using the maximum power of the periodogram. An asterisk (*) denotes that the target was excluded from the gyro-interp analysis, either due to binarity, photometric aperture contamination, or effective temperatures outside the algorithm bounds.