I am happy to check the “blues”, but my impression as to what happened is that the member who gave the statement made no reference to the presence of someone in the gallery. It is just that members apparently recognized someone in the gallery and the applause followed.
I do not know how the Chair can be responsible for that kind of thing, despite efforts. I will check the “blues” in case there was some reference, but I did not hear one. I thought the member had avoided that quite properly.