I think I misunderstood your use of "actual pedal" in the GP comment. You meant accelerator by that? I assumed brake pedal

My point was that unless you do something bizarre or go out of your way to make regeneration not happen (e.g., hit both pedals at once, or shift into neutral while braking), the friction brakes will never get used except for when full regen is already getting used.

Teslas don’t use regen on the brake pedal. That is only using the friction brakes.

Right, but they use regen just by releasing the accelerator. So unless you're hitting both pedals at once, you will be regenerating every time you're braking.

If you use both pedals at once it will reduce acceleration and warn you.

Does the one-pedal regen continue to operate when you are pressing on the brake pedal?

Yes.