"Considering the facts set forth in Rule 26(b)(2)(C)(iii), this is a case in which the stakes are high, both sides have significant resources, and Bildson is apparently a central figure in the case."
The four additional hours "should be adequate time, particulary if the witness comes to realize that brisker, more responsive answers will undoubtedly reduce the tedium that he apparently feels and so visibly displays, with salutary effects on the impression he will make on the eventual factfind at trial."
I.e., take a hint.
Arista Records LLC v. Lime Group LLC, No. 06 Civ. 5936, 5/2/08 N.Y.L.J. "Decision of Interest" (S.D.N.Y. April 15, 2008).