The National Labor Review Board ruled that Google was a co-employer of these union members and, thus, ruled that both Google and Cognizant had to come to the table to hammer out a bargaining agreement with them. Google refused. When this council resolution was put forth, Katherine McAden of Google Austin emailed the Austin City Council members on 02/28/24 to ask them to postpone the vote to "give Google, and the City Council, time to fully understand the direction of this item and potential local outcomes." The very next day (02/29/24), while two members were in the middle of testifying to the council, that was the exact moment Google fired the lot of them.

I don't see how much more open and shut you can get here.