I'm like this for most things except for cleaning the kitchen. It's essential to know she's counting on me, but if she's actually there I can't do anything. It could have something to do with the layout of our kitchen (she has to stand behind me if I'm washing dishes).
If she was working on something at the table I could probably ignore her and focus on cleaning, but if she's trying to clean too, I can't.
I have a buddy with adhd and he's also a musician.
He forgot he had to make a music video.
Not like he really ought to make one to market himself. He is contractually obligated to make a music video and he forgot.... well he forgot until it was just barely possible if everything went smoothly and he ran himself ragged.