You know nothing, Jon Snow. Kit Harington and “The Last of Us” star Bella Ramsey reunited for a sit-down together — and revealed their first “Game of Thrones” exchange didn’t go so well.

There’s an awkward silence before she blurts, “You know nothing Jon Snow!” — a line famously uttered by Ygritte (Rose Leslie) from the HBO show. “The creativity and care taken to create ...