R. Evid. 404(b)(2)(A)-(B). In this Circuit, that provision typically is construed to require notice several weeks before trial. See United States v. Giffen, 379 F. Supp. 2d 337, 345 (S.D.N.Y. 2004) (in the "'absence of any threat to the safety of prospective witnesses and the .. . Rule 404(b) evidence