I've never heard anyone say that Earl Cossey did any work on a Hayden parachute other than pack them.
In fact, Earl Cossey never told me that he did so - and he LIKED to talk - so if he had, I am sure he would have told me something along those lines.
Further, Norman Hayden said that he had never met Earl Cossey. Not sure how Coss could have packed Norm's chutes without those two guys meeting, but it might be possible. For instance, when Norman arranged to buy the chutes from Pacific Aviation*, Barry Halstead, the salesperson, might have made the arrangements with Coss.
I don't know if that happened. Further, I asked Norm how the chutes got packed by Coss without them ever meeting and he just shrugged his shoulders. Was Norm lying? Maybe. Did he forget? Maybe, after all it was 40+ years. But Hayden and Cossey do seem to have some kind of previous relationship. Coss hated Hayden and called him a "piece of shit."
Similarly, Hayden terminated all contact with me because he didn't want to get into a public dispute with Cossey over the chutes, and he felt that if he continued talking to me I'd continue to write about it, and that would cause him problems with other, unnamed financial people and contractors.
*(Note: Not "Boeing Flight Services" or any other kind of "Flight Services" - that is a blatant falsehood in the 302 summary on chutes).