This is craziness. You can't measure how long it is going to take before you reach orgasm. It isn't a race or something you present the time limit on.
The partners should always be together, and in sinc to one another needs, wants, and desires. That is the only timing they need to be aware of. No other. They should be helping one another to get off. Key words here are helping one another. You don't just have your orgasm and then just walk away. You just don't do that. That is "poor timing".
I know what I have given you. I do not know what you have received. ~Antonio Porchia