Torque converter takes benefit of the centrifugal force and throws the oil out of it. It really works like an oil pump. Fluid from inside of the converter casing spreads all through the turbine. The turbine absorbs this fluid and begins rotation. It's instantly connected to the output shaft. https://gearbox20752.blogolize.com/the-fact-about-gearbox-that-no-one-is-suggesting-72856240