Early on, Kepner is talking with three others while they sit around a table. She picks up her water glass twice within a second or two.
In the season 9 premier, the interns were talking in the gallery when Owen pointed out that the red light meant the intercom was on and they could be heard in the OR. So, when Webber went to talk to Bailey and Meredith while in the gallery, he shouldn't have had to get up and press the button because the light was on.