I didn’t spend much time on a 125 (CBT plus a couple of hours tuition) before going to a 600 but didn’t think it added much other than the basic controls. Most of my road skills were already there from cycling and driving and the feel of a big bike is totally different to a 125.
I obviously learnt plenty on the 600 after passing my test but never felt it was too much.
I didn’t spend much time on a 125 (CBT plus a couple of hours tuition) before going to a 600 but didn’t think it added much other than the basic controls. Most of my road skills were already there from cycling and driving and the feel of a big bike is totally different to a 125.
I obviously learnt plenty on the 600 after passing my test but never felt it was too much.