When I started training as phone support at Tmobile 20 years ago I immediately identified the problem that I'd have to be having a conversation with the customer, while typing notation about the customer's problem at the same time.. what I was saying-or-listening-to and typing would be very different and have to be orchestrated simultaneously. I had no way to even envision how I would do that.

Fast forward 8 months or so of practicing it in fits and starts, and then I was in fact able to handle the task with aplomb and was proud of having developed that skill. :)