I friction shift my Bianchi. Front der, rear der crankset are Campy 10, cassette and chain are Campy nine speed. DT shifters are Campy from the 1980s (don’t know the group set). I have a set of Veloce brifters Campy 10-speed chain and cassette in the Campy box. I had intended to upgrade drivetrain to all ten speed when the nine speed parts wear out, but I’m enjoying the retro-ness of DT friction shifting.