Towards a categorical analogue of Gelfand-Kazhdan Theorem

A celebrated theorem by Gelfand-Kazhdan states that the restriction of any cuspidal irreducible representations of $G{L}_n(\mathcal{K})$ over local field to the mirabolic subgroup $P$ is isomorphic to the standard irreducible representation of $P$. We formulate a conjecture that an analogous statement should hold for categorical representations. In this note we prove this for a particular example of an irreducible cuspidal categorical representation of $PG{L}_2(\mathcal{K})$.