I FULLY understand how the defuel works, and maybe you should try quoting me correctly. I said very clearly that a good tune set up properly would virtually no NOTICEABLE defuel, whereas a tune with NO defuel can destroy one QUICKLY. And 4L60E/4l80E's by design can have overlap without suffering severe consequences in many gears. When you have a trans that shifts by engaging a band, and then a one way roller clutch to safeguard when the next clutch pack comes in, it is inherent that it's design will be more forgiving. ANY direct clutch to clutch transmission does not have this forgivness factor built in. Like I said, it's your trans to do with as you please. But others have tried this and learned an EXPENSIVE lesson. And others would be wise to tread lightly into this area.
As for your question, you must be overlooking a defuel request from somewhere, or it is a table we don't have access to since we only get to see maybe 2-3% of what is actually in the TCM code. And it doesn't have to be the TCM calling for the defuel for it to pull fuel.