Comment by CrisMystik

The first sentence is correct, but

> The Council decided Chat Control was on the agenda

The Council is different from the European Council (yes, the treaty drafters were not much creative in naming institutions), the latter is composed of the heads of states and sets the agenda like you said, while the former is composed on ministers in the policy area under discussion, and it's a "co-legislator" together for the Parliament (on most areas, including Chat Control 1.0 & 2.0, both must agree to pass an act).

The issue here (it's part of the "democratic deficits") is that, in its second reading, the EP needs an absolute majority to amend/reject the Council first reading, and a simple majority to approve it and pass it into law.