Juve needed two goals in the final ten minutes from Cristiano Ronaldo to take the three points.
“We just brought home three points, so if we are happy enough with just 10 minutes then we've understood nothing. Absolutely nothing," shrugged Bonucci on Sky Italia.
“We can't seem to change gear and keep up the tempo for the whole game. It's the toughest thing to understand, but we need to keep giving our all to achieve the Champions League objective.
“Matches are decided by incidents. We gifted them a goal, they gifted one to us. It's all about the details and too often this season we dropped points because of details."
Juve are now level in second place with Atalanta and Milan, and face the Rossoneri next weekend.
“Now the next match is one we need to win. We didn't allow Udinese much today, but always lacked that bit of heart, determination and passion that we saw in the final 10 minutes.
“An era is over, we certainly didn't help ourselves this season by dropping points, but Inter were the most consistent team in the long run for this year.
“From today, another chapter begins and we must find the hunger to get back what we lost after nine years of domination, something that is difficult to replicate in future. It was truly epic.
“Congratulations to Inter, they deserved the Scudetto, but we'll get back on our feet and get back out there."