en.wikipedia.org/wiki/Murder_of_George_Floyd

Minnesota had already brought criminal charges against a police officer in the death of a Black civilian before Chauvin was charged in 2020.

Ramsey County’s official State v. Jeronimo Yanez case page lists a criminal complaint outlining the charges dated November 16, 2016, and identifies the underlying case as the officer-involved shooting of Philando Castile. A contemporaneous TIME report states that St. Anthony police officer Jeronimo Yanez was charged in the shooting death of Philando Castile, whom it describes as a 32-year-old Black man.

Because Yanez was charged in 2016, Chauvin was not the first officer in Minnesota to be charged in the death of a Black civilian.

Multiple contemporaneous reports contradict the statement that Kueng and Thao were offered a state sentence consecutive to their federal time.

A FOX 9 report on the August 15, 2022 hearing says they "rejected a plea offer of 36 months in prison to be served at the same time as their federal sentence." That matches how Thomas Lane’s accepted state plea was described by the Associated Press: Lane’s three-year state sentence was to be served "at the same time as any federal sentence."

So the article’s description of the rejected offer as consecutive conflicts with reporting on both the offer to Kueng and Thao and the terms of Lane’s plea deal it says the state had offered them.