The chatter I hear the closest are from 2 males, a female and a child. This sketch I intentionally tried to reflect the different layers. The stronger in front and fading in back.
#6: I heard two distinct male voices. The minor lower toned voice seemed to correct the dominant male voice. The female voice interacts with the males often getting a mumbled response from the minor voice. There’s a child coming in, now. This kept my attention longer. Even after stopping and coming back later I was able to pick them up again. 6.5 hours.