Local 2 of the Piece Material Workers Int’l Ass’n, 565 F Abbott v. Top System Co., 348 F.3d 537 (sixth Cir. 2003) (governing one to causation revealed in spite of 11-week meantime because supervisor mentioned their intention to “get back within” people who had served this new discrimination allegations); Kachmar v. SunGard Data Sys., 109