Questão jurídica principal
Whether the appellant had standing to challenge the IV decision and could seek a declaratory finding on the start of the waiting period.
Decisão extraída
The appellant had standing; the requested finding concerned an appealable aspect of the pension claim and the insurer was bound by the IV findings unless manifestly untenable.
Fundamentação extraída
Having been joined to the cantonal proceedings, the pension fund was particularly affected. The waiting-period start is part of the disputed entitlement, so the appeal was admissible.