Thanks to Tango en el Cielo for the link to this video of Osvaldo and Coca dancing milonga. A much gentler style than that of El Flaco, and one I personally can learn more from: El Flaco is hard to follow! & I notice clearly how Osvaldo leads with his torso before moving his feet. Definitely something I need to learn.
They taught in Turin in 2007, but I doubt they are still travelling.