What type of martial arts were used in the training and choreography?

Anyone know? Looks like it could be a mixture of Wing Chun and Pencak Silat and Krav Maga. I could be biased, practicing two out of the three there. I doubt it was a single-style as he's supposed to be a top-operative who's fighting style is built around killing and not combat sports like say boxing (even though training in boxing would be a good foundation for a self-defense MA-build, same with Wing Chun, from there you branch out get some grappling and learn quick take-downs, efficient and deadly). Could even be some of the more combat-oriented Aikido-esque techniques in there.

But I'd like to know who the fight choreographers were and what kind of training regimen Denzel was doing, obviously his age was a huge factor so im interested in how they played that.