Who are some main characters that had crossed paths, but never spoke any lines to each other?

Obviously characters that never crossed paths (like Stannis/Daenerys, or Robb/Margaery) don’t count because there would be too many to list.

The most obvious one that I think most fans know about is Bronn and Cersei due to their actors’ history. I don’t believe Tywin and Sansa ever spoke to each other, despite both being in Kings Landing between 2x10 and 4x2. I also don’t think the Hound ever spoke directly with Jaime or Cersei (I could be wrong about this one, I’m just going off memory)

Are there any others you can think of?