The Jerusalem counsel was precipitated thus:
"But there rose up certain of the sect of the Pharisees which believed, saying, That it was needful to circumcise them, and to command them to keep the law of Moses."
The earliest Christians, especially in Jerusalem, had simply added belief in Jesus to a full observance of the Law.
The decision of the council was that new converts did not have to be circumcised or follow the law, but did need to observe four abstentions
As Christian commentators observe, these were the minimum requirements for the alien resident stated in the same order they appear in the Torah.
Improperly bled meat is covered by the third abstention. The first abstention is about idolatry, or more precisely the Jewish belief that it did not matter if the idol sacrifice was later sold at a meat market or not. --Benefiting from the sin was participation in the sin.
Paul's more emancipated viewpoint is a problem for those who claim the Decree was necessary for salvation and it requires a more studied explanation than merging and conflating two of the abstentions.