Rule 806. Attacking and Supporting Credibility of Declarant

When a hearsay statement, or a statement defined in Rule 801(d)(2)(C), (D), or
(E), has been admitted in evidence, the credibility of the declarant may be
attacked, and if attacked may be supported, by any evidence which would be
admissible for those purposes if declarant had testified as a witness. Evidence
of a statement or conduct by the declarant at any time, inconsistent with the
declarant's hearsay statement, is not subject to any requirement that the
declarant may have been afforded an opportunity to deny or explain. If the party
against whom a hearsay statement has been admitted calls the declarant as a
witness, the party is entitled to examine the declarant on the statement as if
under cross-examination.