That is a point of emphasis here - to get every number in the halo. One could be onside, the other not.
That's where my basketball background helps: remembering multiple numbers. (Fouler + shooter.)
Of course, the same happens when I sample the nightlife, I have to remember multiple numbers.
Edit:
You have side guys call No Yards? That is not done here. Ever. It would have to be an extenuating circumstance for a side guy to call NY and not get reemed for it. Our side guys watch for illegal blocking, and especially to see if someone was blocked into the halo.