My uncle (now in his 80's), and who's parents where based there during WW2 (as a 6yo boy he saw the Graf Spee leave Montevideo), was the last member of the family to work for the company - he would travel to B Aires and conduct meetings from the airport as his previous residence might have had 'issues' with not having carried out la colimba. Your friend and he have probably met!
Los mejores deseos
Giles