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Micellar Casein > Casein > Food sources > Whey > Hydroslates
Other stuff consumed, such as fiber and fatty acids as well as general bulk, affect digestion and utilization speed greatly.
Personal variation and the current gastrointestinal state also affect utilization speed.
This vague answer is the most accurate you can get, any empirical numbers will not be accurate in all situations but only estimates. (These numbers can easily be googled)