Negraneau call's a value bet with King High?????

[sng-sam]

Please forgive me for not having the exact details of this hand. If someone else can give them that would be great. It was the WPT Episode from last night Borgata. Heads up action.

Preflop raise by daniel on the button. Call by williams

Flop J8x

Williams bets 1/2 pot (ish) with a pair of Jacks
Negraneau calls with K2 no pair no draw

Turn RagSpade

Willams fires
Negraneau calls with Flush draw

River: Red Jack

Williams fire 200k into a 900kish pot
Danny thinks thinks thinks and calls?!?! with King High

He did this earlier with Ace high stating that he wanted to see what David Had. I understood that because it was a much smaller amount and a fishier situation. Here I don't get it. A clear value bet and he calls anyway.

So enlighten me what am I missing?

Straight Flushes,

SAM