Due to the myth of Hades and Persephone, the pomegranate is associated with the duality of life and death: https://greek.mythologyworldwide.com/the-symbolism-of-the-pomegranate-in-hades-and-persephones-story

I don’t think there’s any further link beyond a simple joke

Hah, I was just referring to the “pomegranate” message in the OP. In Greek mythology, Zeus’ daughter Persephone was tricked into a marriage with Hades by eating pomegranate seeds.