Detectability map of TOI-771. The injection-and-recovery experiment was conducted to establish the detection limits using the TESS data. The blue dot marks the position of TOI-771 b, while the dotted red line indicates the 7.6 d period of TOI-771 c as inferred from the RV fit. We explored 9000 different scenarios, where each pixel evaluates ∼45 of them. Larger recovery rates are presented in yellow and green colours, while lower recovery rates are shown in blue and darker hues.