Snip.
No room for underestimating zones here. Italian teams have been underrated over the years and we can remember vividly how Inter Milan knocked out almighty formed Barcelona out of the UEFA Champions League and we had to see the competitive strength of this particular club. Surprises will always come either from Seria A teams, La Liga teams or the EPL. These clubs put in much more efforts to accumulate a win and they will always come for the big win.
Every team that is confirmed to qualify for the Champions League always shows a different performance as usual, Serie A teams may look weaker than EPL and La Liga teams especially Real Madrid and Barcelona, but in reality Inter managed to break that assumption even though they lost badly in the final last season. No one can underestimate anyone in the UCL because they will show different performances to become the best in Europe, surprises will always come and every season there will always be a dark horse team ready to stop the steps of the big teams.
Last season, Real Madrid and Manchester City almost qualified for the knockout stages due to their inability to maintain their best performance. This season there may be another surprise that was never expected before.