To hum and haw means to speak in an evasive or roundabout way, but the context describes giving a direct and straightforward answer.
Context: Soon he got restless “I wish they would get on with the debate.How much longer do we have to hear this guy give a direct and straightforward answer?”.
Hypothesis: Soon he got restless “I wish they would get on with the debate.How much longer do we have to hear this guy hum and haw?”

Given this context, is the hypothesis true (Yes/No/I don't know)?