Malone, in answer to your first post, please keep this thread. It’s very helpful to get some idea on the nature of a puzzle without any chance of the game being given away, even if there are only a few posts. I don’t look at “may contain answers” unless completely stumped or finished.
I live in Asia, so the Listener gets published (very) late on a Friday for me. I’m writing this early Saturday morning, before my young son wakes up. When that happens, progress on the Listener generally slows somewhat!