I love how there's a real close bond between them as well as a creative click. I remember reading Finneas on Twitter where he said he was sick of hearing people being described as 'the next Billie Eilish' because, as he put it, there is only, and will only ever be, ONE Billie Eilish.
They're immensely talented peeps for sure and I'm going to go hunt out some of these other videos of them working on tracks that you mention - I mean that's a much better idea than actually doing the work I'm paid for, right?!?!?!