>with Lula having 2 conversations with Zelensky in the past week

I believe the conversations have not heppened yet. The original report from the Itamaraty said that the call between Lula and Zelensky had been scheldueld for after Carnaval and more recently Vieira said that it is expected to happen next week.

Vieria also mentioned that Lula will probably also hold a call with Putin a few days later as to follow the standard practice of the Itamaraty in cases of conflicts.

There's also been some reports that Zelensky will likely invite Lula to visit Ukraine during their direct call. Knowing Lula i think he is likely to accept.