I absolutely can't multitask: I can't drive properly and talk (I can do it, but my driving isn't good). I could never talk and play piano, nor even sing along as I played (I don't have opportunity to play anymore).
I can however talk and type, but it's done in a way where I fill a mental register with the sentence I'm typing, switch focus whilst my hands operate on that register; then fill the register in a pause from the conversation. It's just rapid task switching for me except the typing. Probably took me a decade of touch typing to get there.
I'm also I've of those people who ends up writing down the conversation if I'm handwriting and conversing.
-- reflecting now when playing piano I'd try and fill a mental register with the forthcoming musical phrase whilst I switched to speaking. I think perhaps it didn't work because I struggle with rhythm and so need central focus to maintain any semblance of rhythm.
I can however talk and type, but it's done in a way where I fill a mental register with the sentence I'm typing, switch focus whilst my hands operate on that register; then fill the register in a pause from the conversation. It's just rapid task switching for me except the typing. Probably took me a decade of touch typing to get there.
I'm also I've of those people who ends up writing down the conversation if I'm handwriting and conversing.
-- reflecting now when playing piano I'd try and fill a mental register with the forthcoming musical phrase whilst I switched to speaking. I think perhaps it didn't work because I struggle with rhythm and so need central focus to maintain any semblance of rhythm.