lman doctrine after Mohawk,"[o]nly when the person who as- serts a privilege is a nonlitigant will an appeal from a final decision be inad- equate." Wilson I. O'Brien, 621 F.3d 641, 643 (7th Cir.2010); see also In re Grand Jury, 705 F.3d at 145-46 & n.11 (rejecting that Mohawk narrowed Perlman"at least in the gra