Kennedy knew he was leaving any England ambitions behind when he swapped London Irish for the Cote d'Azur and there were times this season when he wondered if he had made the right call. The 31-year-old initially struggled to break into the star-studded Toulon team - but that setback just made Saturday's staggering 16-15 triumph over Clermont Auvergne all the sweeter.
"I have absolutely no regrets. It is such an amazing feeling to win after everything," Kennedy said. "I had some difficult times this year and there were times I wondered if it was the right move - but lifting that trophy has justified it all."
He added: "It is one of the reasons I came here, to win trophies. To win the Heineken Cup has been a goal of mine for years and to win it with these guys is amazing."
Clermont dominated the game in terms of possession and territory and when they surged 15-6 ahead early in the second half, with tries from Napolioni Nalaga and Brock James, it appeared Toulon were set for heartbreak.
But they refused to concede defeat. Jonny Wilkinson landed a third penalty and then converted Delon Armitage's breakaway try to nudge Toulon into the lead.
After that it was all hands back to the pump in defence. Toulon made a remarkable 176 tackles to Clermont's 66 and they held on to claim a first major trophy in 21 years.
Clermont lost their composure at the death, with David Skrela seeing a drop-goal attempt charged down and Sitiveni Sivivatu blowing their last attacking chance with a forward pass into touch.
"They were clear favourites all around Europe and I have so much respect for the boys. We showed so much heart, especially in that last five minutes," Kennedy said.
"Everyone was shouting 'drop goal, drop goal' because one kick and it was over for us. For Mathieu Bastareaud to get off the line after such a tiring game was great work."