Did Al Capone work for lucky luciano?

Answer 1

Yes he did.

When Luciano became leader of mobsters, he was given the title cappo di tutti cappi, but he denied it. Instead of that, he created a comission, in which every family boss was equal, but still, he was in charge in that commission...

Al Capone was in that commission, as boss of one of the family (there was five), Chicago family...

But, in the end, every boss, including Al Capone, was answering to Luciano.