Kuenssberg said, " What do you say to our viewers at home who are worried about some of your views and worried about you becoming the leader of the free world?"
Mr Trump pointed to Ms Kuenssberg and turned to Mrs May, saying: "This was your choice of a question?"
He then leaned in to the microphone and joked: "There goes that relationship."
His response prompted laughter in the room - but some viewers criticised the BBC journalist's questioning as "rude": "
It's Peston's strangulation of his vowels, the way he elongates them that drives me potty. And I don't like K either, too smug and pleased with herself.
Don't know McGovern, which channel is she on please?
Oh Yes I know her, just didn't know her name. She's more annoying than Kuenssberg and I've never heard an accent anywhere near hers. I think she's made it up.