Split pie chart legend

Hi,

I have a pie chart with two nested buckets: countries and cities for example. I see both countries and cities on chart legend in one column. Is it possible to split legend and show countries and cities colours in different columns or in any another way which will not mix them?

There isn't currently, but you can +1 https://github.com/elastic/kibana/issues/3402 and follow it for progress on the feature request.