Ah, I see! It's a really cool feature, by the by!
A question: what is the "range" on a character detecting nearby props or objects for interactions? One square away? Two?
I think it's max range is two, but it could also be three. It's about the same range an NPC can be from the player to rope them into a conversation, but you still need an NPC next to you to do so.
NPC's can overhear your conversations so that might also be the same range or larger. NPC's in the same room as other NPCs usually notice them and sometimes mention them if they aren't in the conversation. I'm not sure if that range is the same or different.