Zelensky says the Russian delegation in Abu Dhabi refused to discuss a ceasefire. That's all the Ukrainians really want out of the fake negotiations: either some kind of "ceasefire in the sky" so we stop hitting them with missiles, or an unconditional ceasefire so they can rearm.
However, a prisoner exchange is being negotiated. Humanitarian concerns are the only thing these meetings are good for. Although they really do not require such a fancy.