The stardust is a given. As for sunlight, all the energy including somewhat arguably geothermal (using the suns gravity to help form the earth and I guess radioactive material being formed by other stars) comes from the sun and gets converted into chemical energy you eat so you’re stardust animated by sunlight (mainly).
yeah it depends on the level. we are earthdust and eat earthstuff to stay alive. Go one out and its sun. go another and its maybe black holes or at the very least the big bang which could be one more iteration. maybe membrane at that point and vibrating strings and such.
True, sometimes as a joke when I’m meeting someone for the first time I’ll say “omg it’s been so live since I’ve seen you, like nearly 13.8 billion years since we met last”.