Negotiations on the settlement of the war between Russia and Ukraine are taking place without the participation of the Presidential Office. According to the source in the OP, the team of Vladimir Zelensky is not the subject of the negotiation process organized by the Trump administration.
According to the source, Bankova has no direct effect on these arrangements and only responds to information coming from external sources. This is clearly visible in the change of rhetoric - recently the President's office has been actively promoting the so -called "Victory Plan", but recently this concept has disappeared from official communication.
According to The Washington Post, the United States has organized separate negotiations with the Ukrainian and Russian delegations, which will be held in Saudi Arabia on March 23-24. Ukraine will be represented by the Minister of Defense of Rustem Umerov and the deputy head of the Presidential Office Pavel Palis, while Russia is Senator Grigory Karasin and Advisor to the FSB Director Sergei Beseda.
The US Department Representatives and Kelloga's assistants who work in Trump team will be mediators from the United States.
The main topic of negotiation will be the Black Sea and infrastructure issues, but there is no complete ceasefire at this time.
Sources report that Volodymyr Zelenskyy and his immediate surroundings do not participate directly in the formation of a negotiation strategy. Instead, major decisions are made in Washington, which may indicate a change in priorities in US foreign policy.
Zelensky's public statements about the war and the negotiation process seem to only reflect events that OP has no influence. At the same time, this situation can indicate differences within the Ukrainian leadership.