The Black Caps won the five-match ODI series 4-0 and the two-Test series 1-0, the latter thanks to a superb triple-ton by McCullum, which was the first by a New Zealand batsman.
"Yesterday (Tuesday) stopped a nation to a degree," said Hesson, talking about the final day of the second Test versus India here.
"A lot of people took a great deal of satisfaction out of it. As a New Zealander, not only as coach, it was a pretty special moment. A lot of people were touched by it and gained lot satisfaction from it and quite rightly so," he added.
"We saw that real emotion come out when Brendon got his 300. We all sat on the same seats for a couple of days, ate the same food and tried do as little as we could. When he got to 300 you saw true emotion come out and we were all delighted for him," he said.
"He (McCullum) was pretty sore after day three and four but I guess it's a good sore. Once he got 300, he looked a lot fresher than an hour before. It was just a special time to be part of," he added.