New Zealand was left dejected after going down to England on boundary count law.
In an Instagram live chat session with IPL teammate and friend David Warner, Williamson recalled finding it difficult to control his emotions, as his team went down to the host despite consecutive super-over ties.
"It was an emotional time and it had to be emotional at that point," Williamson said. "You very much have to do your next task despite the number of things outside your control and all these bits and pieces of things that happen on a cricket field, you still gotta manage those emotions."
"After the game, it was quite difficult to make sense of it, but I think the thing we can reflect upon and be proud of the way we played the entire tournament, and we know on that Lord's ground that 230-240 was gonna be very competitive."
Fans' favourite Black Caps had all the emotional support of cricketing audiences across the globe leading up to the big encounter. Hence, there was a genuine uproar over social media when the tie was broken in controversial circumstances.
"We knew what we had to do and we got to a competitive total without being special and then taking those wickets with the ball and building pressure was satisfying," Williamson said. "I felt you don't have too much to complain about and we were able to do that and the fact that the game was decided by a number of things that are out of your control is another factor."
"You don't tend to have too many opportunities to think about those sorts of things. The international schedule, domestic games and with a lot of league cricket, the focus becomes the next game and you don't really have to think too much about the past."
Following heavy criticism of the boundary count law, the ICC was forced to abolish it completely and officially adopt multiple super-over rule for such instances in the future.
(Inputs from Cricbuzz)