If the Helene Fischer show is not the right place for Q+AL that's not Brian or Roger's fault, its impossible for them to know the target audience for every show on every channel in every country of the world.
I dont know how it is in every part of the world but at least I enjoyed the HF's show. I found it very entertaining and enjoyed it a lot.
You wont believe it but here in Mexico its very common to see rock and metal bands being interviewed by weird guys, perhaps that's the reason I see no problem with the HF show.
Rammstein interview in El Mañanero (the biggest politics news show in the country and one that used to be the most critic show towards the government on TV, which is led by "a very vulgar, drunk clown")
https://www.youtube.com/watch?v=2YeIrIJBeHE
Alan Parson's in a comic show Otro Rollo https://www.youtube.com/watch?v=ADLuxRUk4sk
And you can find Iron Maiden, Emma Shapplin, Sarah Brightman, Metallica, Paul Mcartney etc and lots of big acts in shows like this. This is not something the artist planned but something the promoter considers the best available option for promotion.
winterspelt