Newerversion I'm very aware of this but this also depends on the individual woman.
One of my partners orgasmed very easily and from PIV alone - it was simply a case of the longer we went on, the more she would have, often 3, 4 or 5 in some sessions - it was fantastic.
Sadly with my wife, she finds it very difficult to orgasm and there is no chance whatsoever of this ever happening during PIV no matter how many times she has tried with me or other partners, even when she tries to do it for herself.
The only way she can orgasm is if all the stars are aligned, the conditions are perfect, I spend 30 minutes to an hour with my fingers or my tongue and she might just get there, but I can't distract her or get anything in return as this too is a distraction, hence it becomes a bit of a boring chore and a 'your turn, my turn' affair.
Once she's hopefully and eventually orgasmed, she loses what very little enthusiasm she had that took forever to build up, leaving me to 'enjoy my PIV' with a partner who is done and dusted and just not that bothered.
It's crap.