This may help. I had a Tesla Model S for many years. When I would charge to 100% or approach maximum charging I noticed that there was little or no feeling of regeneration when I applied the brakes. I spoke with Tesla and was told there is no regeneration until the battery actually needs to be regenerated.
When the level of charge began to run down I could feel regen. Because the Taycan is set up to avoid the feel of "one pedal driving" we don't feel the difference when regeneration is operative when we apply the brakes, but I suspect the same result is occurring. When the battery is close to a full charge there would be no regen. As the charge level goes down regeneration increases with braking even though we cannot feel that occurring.
Maybe this is obvious, but it may add to this discussion.
