Tadić's critical-type conjecture for classical groups

Let $G$ be a classical group over a non-Archimedean local field $F$ of characteristic zero. Let $\Pi_{crit}(G)$ be the representations of critical type, let $\Pi_{A,\,crit}(G)=\Pi_A(G)\cap\Pi_{crit}(G)$, let $\Pi_{u,\,crit}(G)=\Pi_u(G)\cap\Pi_{crit}(G)$, and let $\Pi_{iso}(G)$ be the isolated unitary representations.

Tadić's critical-type conjecture.

$$\Pi_{A,\,crit}(G)=\Pi_{u,\,crit}(G),$$

and

$$\Pi_{iso}(G)\subseteq\Pi_{u,\,crit}(G).$$

The conjecture seeks to characterize unitary representations of critical type as precisely the Arthur representations of critical type and places all isolated unitary representations in this class. The supplied text gives no resolution of either assertion.