Figure 8 . Coupled 4d/2d/0d quiver gauge theory realizing the insertion, in four-dimensional SQCD, of intersecting M2-brane surface defects labeled by symmetric representations of rank n R and n L respectively. Various superpotential couplings are turned, in direct analogy to the ones given in detail in [21]. The Higgsing prescription applied to a linear quiver gauge theory with two gauge nodes reproduces the partition function of this coupled system.