Good says he eye witnessed 8 to 10 seconds of struggle.
Good says when he saw arm movement of person on top going down that he turned away to call 911. (But has said he can't say he saw punches.)
O'Mara goes back to initial cry for help. Good goes through process to say why he thinks it was person on bottom.
O'Mara then goes over BDLR's "histrionics" of thumping table to make punching noises. O'Mara gets Good to say he can't say if lack of hearing punches meant there were no punches.