When I spoke with Coss in 2009, he said the NB-6/NB-8 was his personal parachute. He also said that he had made significant modifications to it, such as relocating the ripcord and putting the handle in a pocket.
As a result, he said the handle would be hard for a whuffo to find, and the "pull" would be a two-directional effort - out and up, away from the shoulder, and then upwards. He reiterated that a whuffo would have trouble with that two-step process.
Cossey further claimed that he sent the NB-6/NB-8, and a personal "luxury civilian" main, to DB Cooper as per Al Lee's direct request.
Note: Cossey changed the NB designation every time I talked with him, alternating between an NB-6 and an NB-8. Initially he said it was an NB-6 overstuffed with a 28-foot canopy. By the time of our last phone call, circa 2012, he said it was an NB-8, filled with a regular 28-foot chute.
As for Hayden, Cossey never mentioned him until I did in our last phone conversation when I asked about the controversy of who owned what. At that time, Coss said Hayden was "full of shit."
Hayden, for his part, told me that he had never met Cossey, nor had they ever spoken. How Hayden got his chutes packed by Cossey was never explained by either gentleman.
When I told Hayden that Cossey was saying that he (Hayden) was FoS, Norman replied, "Well, Cossey is full of beans." Norman continued and said that he wanted no drama with Cossey, and soon afterwards broke off all communication with me.