I know of no follow-up, Aero or otherwise. I’m sure you’re right: it never really had chance to take effect. The only Aero co-ordination of which I am aware was of the separate UK/French/Belgian Purchasing teams in US, who tried not to tread on each others’ toes by ratcheting up US prices. After June,1940 UK inherited all, paying in money. The French Head, Jean Monnet (future Father of the EEC), became Deputy Head of the Br. Supply Council in US.