g-luv

I just got a 2019 Fusion Energi and previously had a Chevy Volt. In the Volt driving in L was an acceptable method of passively increasing battery regeneration. I always drove in L and preferred being close to one pedal braking along with the paddle on the steering wheel to add more regeneration. Does driving in L on the Fusion safely add more regeneration and car slowing assistance or does it work more like a traditional ICE and just use the engine to and transmission to slow the vehicle?