NOT ALL CCs can Be send by DT

[sezare56]

@ilterzosole

why if I use the thru port from DK to OB 6 I receive on OB 6 both midi notes and CCs sent by ableton, while if I use midi out from DK to OB 6 only Midi Notes and NOT CCs sent by ableton are recognized by OB 6?

Because Midi Thru pass everything through, by definition, and Midi Out pass Notes only. You can use CC 70-77, and also resend Clock/Transport with Midi Out.