Kendall Jenner Consoles Ben Simmons ... After Vicious Dunk Attack

Ben Simmons and Kendall Jenner just learned how tragedy can bring a couple closer together ... because lovebirds spent some quality time moments after Ben was assaulted on the hoops court.

By a vicious, savage, disrespectful, jaw-dropping dunk.

It happened during the Knicks vs. 76ers game Wednesday night, when Knicks rookie Kevin Knox delivered a two-handed destruction to Simmons that shook social media to its core (which is pretty easy to do).

It happened in front of a packed house of celebrities including Regina King (who almost got bulldozed by Joel Embiid) Tracy Morgan, Karrueche Tran, Justin Long and Maluma.

Kendall was there too, and after the game she and Ben hit the town with some…