Here is what a real Democratic gerrymander of CT looks like. https://i.imgur.com/hqtE52v.png.

That map makes the 5th district 5 points bluer than what it currently is by including Bridgeport in exchange for the rural northwest corner. It also shores up the 2nd district by putting Manchester in it and giving the heavily red northeast part of the state to the 1st. The current 2nd could be competitive if Joe Courtney ever retires, although it is quite safe while he is there.

The current map is not gerrymandered for Democrats. But they also know that the courts won't accept the kind of map I drew, so they just offer the least possible change map that they think courts will accept.