When Brian Crighton was developing the Norton NRV588 rotary race bikes, he worked out that there was a definitive distance from the carb needle to the tip of the rotor, where the motor worked best and produced best power/torque, and with a distance outside of this it performed much less optimally.
it doesn't matter how many times the pulse travels up and down the inlet runner, but if the lengths are right then it will always arrive back at the inlet valve when it is open, either just opening, or just before it closes when subjected to the inertial supercharging effect from overlap etc. Although the pulse effect will change slightly it will not change that much. Ideally try to get it as straight as possible.
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