Not two Pioneers? Then, how do you explain the packing cards?
Also, exactly which chutes as described by Cossey? The "Paradise?," the "ParaCommander?," the "NB-6?," the "NB-8?," or the "Pioneer?"
Coss is a tough guy to nail down sometimes....
The packing cards don't matter. I do not know if "226" is a model number or something else. It sure as hell does not appear to be a serial number given that it's only 3 numbers long. Who knows, but it was written in Cossey's hand--compare how he writes numbers.
Nonetheless, to leap to some kind of nefarious conspiracy theory is where this case always goes sideways.
The 302s clearly mention DBC jumped with a NB 6 packed with a 28' round. Therefore, that's what we should be looking to find.
Moreover, Hayden's former claims regarding Cossey and the FBI are provably false. I'm not going to say he lied, just that Hayden may simply have forgotten the details...after all, it had been 40 years at that point.