re: Was Tim Conway the greatest comedic actor?

I loved the guy, but no. He was funny in the niche he carved out for himself, especially doing those skits on the Carol Burnett Show as a regular on there.

The fact he was quick witted and was often off script adlibbing his parts made it all the more funny, but painful for some of his stage partners to deal with by never knowing what would come out his mouth next.

That is why he often had his fellow actors breaking role and losing it on set.