Answer the question.
When did the RCC start handing out both? After how many centuries of not?
*IGNORE ON*
(a) I'm guessing after Vatican II
(b) Many centuries. I can assure you the logistics of offering the chalice are challenging, and I would never insist that anyone partake. For example someone with celiac disease can refuse the bread, and someone who is uncomfortable with drinking out of the same cup as others or someone who is an alcoholic can certainly not drink from the cup.
Would you insist that someone with celiac disease partake of the 'bread"? Why?