I think listening behaviors are quite culturally based as well. For example:

Here in the Appalachian mountains, suppose two guys are talking to each other, perhaps both leaning on a fence. The guy who is listening doesn’t watch the speaker the entire time. They don’t make occasional noises either.

My buddy asks if I want to hear a story about some trouble he had recently with a neighbor. I nod and look at him “Yea”. He then proceeds to look forward, out across the field and I do the same. Buddy says something that I support, like what he did that started the trouble. I nod, quietly, or even make that “this is ok” face. If I make that face, it’s like saying “That makes sense to me, nothing unreasonable about that”. Unless he says something that you know he expects support for, then you just motionlessly stare into the foreground.

If he tells me something the neighbor did that angered him, I will look at him and make the astonished face, he will look at me and nod, then he verbally confirms it as we go back to staring at the field. He will go on about it some, and I will quietly lower my head a little and shake it back forth to show my disbelief in how crappy his neighbor is.

Then whatever conclusion he comes up with, I’ll either say, “hell yeah, that’s what I’d do” or “whoa I dunno about that all that now” or something similar. The cues for listening and the correct responses to them will vary probably within subcultures.