One of their acting teachers at Howard, actress Phylicia Rashad from The Cosby Show, “pushed for us,” Boseman told Rolling Stone. “She essentially got some celebrity friends to pay for us to go.” It wasn’t until after the program when he got a beneficiary letter and found out who funded the program: “Denzel paid for me. I’m sure he has no idea. … I’ve been waiting to meet him, so I can tell him.”
Boseman wanted to meet Washington in person before saying anything. He hadn’t met him before the Rolling Stone interview but, after 20 years, he figured it was OK to reveal the detail. As Boseman told Fallon: “I think I’ve made it to the point where he’s not going to think I’m trying to get something from him by saying it.”
Coincidentally, just before the Rolling Stone feature came out, Boseman got to meet his benefactor. Washington came to the New York premiere of “Black Panther,” and, “I met him, before the article came out,” Boseman told Fallon. “So I actually lived up to what I originally wanted to do. It was amazing.”
When Fallon asked how the introduction went, Boseman recalled how he thanked him for paying for Oxford a while back, to which Washington jokingly replied: “Oh, so that’s why I’m here. You owe me money! I came to collect!”
Source: https://www.cnbc.com/2018/03/02/denzel-washington-paid-for-chadwick-boseman-to-study-at-oxford.html