[OverAndBack]

Just devil's advocate here - doesn't a true intentional foul make itself obvious right away? If it's that close that you have to think about it or get prodded by your partner (even unwittingly), maybe it's not intentional?

I'd like to think that whoever has primary coverage can recognize an intentional straightaway and make the call right then. The longer you think about it, the more doubt you could have either way.

I'm hardly one to talk, still being new at this, but I would think at some point it becomes instinct - you know an intentional right when you see it. The other factors (the way the game has gone, the score at the time, etc.) should already be in your mind and help you make the decision right then.