I really think the loss of THAT shipment gave the Calabrians the opening to build trust in Colombia. That combined with the completion of that port.
Like until then, LCN controlled European coke. Then it became kinda like an open bazzar in Spain, until all the routes and channels really got sewn up...
True, the agreement was 70% for CC clan 30% for the 'ndrangheta.
It was the Pannunzi, Miceli, Agate group who took over the Colombian connection after that, while the fathers, who had a history in Canada, are gone (prison or dead) the eldest sons took over the business in Colombia.