I actually don't believe in any hype about this Chelsea team even though they drew man city, I just sees them as a spoiler, apart from the carabao cup finals, they knows that their season is practically over, so they are just looking for someone to go down with them, that's why they always gives their all when they are playing a bigger team.
Just take a look at their performance during the cause of the season against small teams, they are mostly terrible, but when it comes to the bigger teams, they will give their all, if not for there wastefulness in front of goal, they would have closed out the game before man city woke up from their slumber.
Top clubs doesn't relent from entering keg positions for good results. Chelsea was calmly down when they face Manchester city because they are playing absolutely zero thing buy they always have a way of sharing points with Manchester City this season. I would call it luck but the second leg of the EPL meetings just clear everything, Chelsea play major game when they face the Citizens, they hold their ground. With my clear eyes, I don't believe there's any other excellent form of Chelsea other than their best form against Manchester City this current season.