  The phenomenology entailed by a scalar resonance in a top partner model is
analysed here in a $SO(5)$ Composite Higgs formalism. Heavy scalar resonances
production and their decays modes are explored along a benchmark resonance mass
range. The production of single-double partner final states has been scanned
along the partner mass scale. QCD drives such production, as well as the SM
gauge, Higgs, plus the intermediation of the scalar resonance. Non-zero
contributions are induced as long as extra fermion-resonance effects are
included. Finally, we have excluded regions of the parameter spaces underlying
our framework by imposing the recent LHC searches for vector-like quarks
production in $pp$-collisions at 13 TeV. Substantial reduction of the allowed
regions occurs if extra fermion-resonance effects are accounted for, leading us
to test the involved parametric dependence in the shed light of new matter
interactions.
