waiver or an exception to waiver such as extension via the common interest privilege or the agency privilege. See e.g., Safeco Ins. Co. of Am. v. M.E.S., Inc., 269 F.R.D. 41, 46 (E.D.N.Y. 2011) (applying New York law) (citing Abu Dhabi Commercial Bank v. Morgan Stanley, 08 CV 7508 (SAS), 2011 WL 471