“I think the show needs conflict, excitement and challenges,” Arlene explained.
They went on to view a clip of Brendan arguing with Shirley over his Tango with Charlotte Hawkins during last year’s series.
Shirley could be seen claiming there was “too much rise and fall” in their routine, with Bruno telling Brendan to be “more respectful” to the judge when he answered back.
Reflecting on the confrontation in the studio, Arlene said that it was “mild” and the judges overreacted.
“Bruno jumping in and saying that’s not respectful, what are they? Headmaster and a kid in a school?” the 74-year-old laughed.
“For goodness sake! It’s a professional and celebrity entertainment show.”
She went on to add: “Shirley was right to say, ‘Let’s watch it back, let’s look at it together’.
“I don’t think Bruno should have jumped in. I think that was ridiculous.”
Arlene also noted that Brendan was in fact correct when he hit back at Shirley’s criticism that there was rise and fall in their Tango.
“Everyone knows that is one of the things in the Tango, you wouldn’t even put it in or teach it,” she commented.
“It is quite hard to put rise and fall in the Tango.”
Good Morning Britain airs weekdays on ITV at 6am.
