It was just a thought.
It's an intelligent question, actually—since GR and QM work so fantastically well within their domains, it's fair to wonder whether GR does its own thing, and QM does its own thing, and never the twain shall meet.
It's just that the places they
do meet are so extreme, we don't encounter them, except maybe for the briefest fractions of a second in CERN, and that's a 'within the last ten years' thing.