That’s where I’m unclear: If I’m consuming 100g an hour, what is my absorption? I suppose your ratio of glucose/fructose must matter. I also assume some folks may be genetically gifted like many things, to absorb higher rates.
I also wonder if the absorption rate changes during the effort of say 5 hours - if your muscle glycogen depletes, does your exogenous carbs absorption increase? If this is true that the absorption increases over the ride, then it might make sense to slowly up your carb intake over the ride.