If it`s a choice between Open Letter and SOX Compliant filing, I always go with the latter.
I select as my definition of ``involved``: to bring as a consequence(Chambers). So, the signing of the deal did, in fact, bring as a consequence, a one-time fee to Patriot. There is nothing to prevent further and ongoing milestone payments(which were originally due to TPL)from being made to P-Newco - there is no contradiction.
Be well