  We conceptualize in the paper the linear degenerate symplectic flag varieties
as symmetric degenerations within the framework of type $A$ equioriented
quivers. First, in the larger context of symmetric degenerations, we give a
self-contained proof of the equivalence of different degeneration orders.
Furthermore, we investigate the PBW locus: geometric properties of the
degenerate varieties in this locus are proved by realizing them from different
perspectives.
