Injection-and-recovery tests performed on TESS data to check the detectability of extra planets in the system. We explored a total of 1920 different scenarios. Each pixel evaluatedfour scenarios, that is, four light curves with injected planets having different P_planet, R_planet and T₀. Larger recovery rates are presented in yellow and green, while lower recovery rates are shown in blue and darker hues. We can rule out the presence of planets with sizes >2.5 R_⊕. Planets withsizes <1.5 R_⊕ would remain undetected. Planets with sizes between 1.5 and 2.5 R_⊕ have recovery rates ranging from 30 to 70%. The red vertical line marks the maximum orbital period (12.54 d) allowed for the hypothetical inner planet to avoid crossing orbits between the planets. See the text for more details.