It's a pity they both died seems to imply that you're such a bad conversationalist and hoofer that your talking and dancing killed two famous actors. " Which implies that you have hallucinations, an active fantasy life, or a time machine. Here the present tense "are" means the ongoing state of their demise.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.