  In this paper we give a field theory explanation of two confining dualities
that have been proposed in the literature based on exact results from
supersymmetric localization. The first confining model under investigation is
4d $SU(N_c+1)$ SQCD with a conjugate rank-$2$ anti-symmetric tensor, $N_c+3$
anti-fundamentals, $2N_c$ fundamentals and a superpotential that couples the
anti-symmetric tensor and the fundamentals. The second confining model studied
here is $3d$ $\mathcal{N}=2$ $USp(4)$ gauge SQCD with two fundamentals, two
rank-$2$ anti-symmetric tensors and vanishing superpotential. Here we prove
that these models are confining by using the technique of deconfining the
anti-symmetric tensors and then by flowing to the IR description by sequential
dualities. As a bonus the analysis provides (alternative) proofs of the
identities obtained from supersymmetric localization.
