Brown was the defensive coach for the successful New Zealand side which demolished England 64-17 in the final of World Rugby's Under-20 Championship.
While he was helping the ''Baby Blacks'' hone their defensive strategies, there were some changes back home in Dunedin.
Highlanders assistant coach Scott McLeod was named as the defence coach for the All Blacks and will leave the Dunedin-based franchise at the end of the season.
With Cory's brother, Highlanders head coach Tony Brown, also leaving the Highlanders at the end of the season, there are vacancies.
Aaron Mauger or Mark Hammett will take over as the new head coach, but the team will need a defensive guru.
Highlanders scrum coach Clarke Dermody and skills coach Jon Preston are in the mix. But Cory Brown is developing an impressive resume.
He was non-committal when asked if he would apply for the role, but does harbour the ambition to coach at the highest level.
''I haven't really thought too much about it but it is something I could think about,'' he said.
''We sort of just got back and I haven't been approached by them. But I'll think about it and see if I will put my name in the hat or not.''
Brown said as a player he wanted to get to the highest level and ''as a coach I'm exactly the same''.
''Whether I'm ready, I'm not too sure. That is not up to me.''
Brown's stint with the New Zealand under-20 side has certainly helped enhanced his reputation and value as a coach.
He had the opportunity to forge some strong relationships and that could pay dividends for Otago.
''I don't know if we can say that on record,'' he said with a laugh when asked if he was bringing any of the players south with him.
''But you do get to see the best young players in the country. It is not just the 26 in the squad because there was 55 at the first camp.
''Some of them were from Otago, so hopefully there might be an opportunity for some of them down here and they could come and play for Otago.''
Alhambra-Union fullback Jona Nareki got a start against Italy and was ''outstanding in the game'', but ''unfortunately did not get another opportunity''.
Hooker Asafo Aumua was the star in the final. He scored a hat trick and has many new fans, Brown included.
''He is awesome in the open field. He has a huge future, really. He is very physical, he is very aggressive and apart from that he is a good man.''
Brown thoroughly enjoyed his time in Georgia. The tournament was well-run and the country embraced the competition, he said.
''Rugby is one of the bigger sports there - it is really growing. Kids are playing it and there is support and crowds.''