  In an earlier work, we considered a family of restriction problems for
classical groups (over local and global fields) and proposed precise answers to
these problems using the local and global Langlands correspondence. These
restriction problems were formulated in terms of a pair $W \subset V$ of
orthogonal, Hermitian, symplectic, or skew-Hermitian spaces. In this paper, we
consider a twisted variant of these conjectures in one particular case -- that
of a pair of skew-Hermitian spaces $W = V$.
