What is the test for a motion seeking interlocutory review of an application by appellant in the Superior Court of Justice alleging that the appellant has been denied access to cross-examination during the hearing?

Citing Fay v. Douds, appellant asserts a violation of its constitutional right of free speech, because, it says, "the rulemaking proceeding underlying this action" involves commercial advertising, a protected form of speech. It also contends that it was deprived of its constitutional right to adequate cross-examination, which it characterizes as an "inseparable component of a plenary judicial process." These alleged violations are much too tenuous to justify interlocutory review.