Detrended TESS and ground-based light curves for TOI-1130 b (left) and for TOI-1130 c (right). The light curves are shifted in phase according to the derived linear mean orbital period of each planet and shifted arbitrarily vertically for visibility. The corresponding transit number is shown on the left of each transit. For more details see Table 1. All light curves are binned to 10 min, except for the 30-min TESS light curves. The best-fit PyTTV transit model (see Sect. 3.4) is overplotted (TOI-1130 b: salmon and TOI-1130 c: blue). We note the different y-scales.