I had all controls demonstrated and then given to me on my first lesson, then all 3 at the same time (with help on the duals of course!) Not that I moved them much apart from the cyclic!
I always get a trial student to use all 3 seperately after a 'follow through' demo in the hover. They all do very well if carefully briefed, women have the edge over the men generally. Most students can manage all three in the hover (for a short time) by the second lesson. Hovering in FULL control for a sustained period takes between 4- 6 hrs taken in 40 minute 'bites'.
My CFI here in NZ says "If they can hover, they can fly", and he's not far off the mark.
Yes, the teetering robbie cyclic confuses many even though you briefed it twice, the excitement makes that evaporate but it soon sinks in!