Well, you want to be respectful and know the protocols," he said.
He added that meeting Princess Charlotte remained the most memorable part of his experience. "Princess Charlotte was still the highlight for me.
I had four daughters as well, so, I mean, she was great," he said.
Prince William responded with encouragement regarding raising a large family. "Now, congratulations.
Having four daughters. I don't know how you do that," he said.
Jason Kelce acknowledged the effort required. "That is definitely a difficult task.
The hardest job," he said.
Football Passion and Aston Villa
When asked about a successful tournament for England under manager Thomas Tuchel, the prince stated his high expectations.
"I think winning it," he said.
He praised Tuchel's tactical adjustments and aggressive playstyle.
"Thomas, I think, prefers to go a bit more out there - and if we lose, we lose playing the way we want to play.
And if you're going to score four goals, we'll score five. And I think that's a really good attitude," he said.
The prince explained how his dedication to Aston Villa deepened during a difficult period 26 years after his first match against Bolton.
"So I think weirdly, this sounds very odd, but I got into football more than ever when we got relegated," he said.
He described how the demotion changed his perspective.
"So when Aston Villa went from Premiership to Championship, I suddenly really enjoyed the battle to get back in the Premiership," he said.