I wonder if it is a biological thing. My wife excels at multitasking but I can barely do two things at a time. I did notice the delayed speech with my wife as well.
I'll gladly do 2-3 things at once all day, but she has to pause the TV to answer a question or read a text message
I don't think I'm as good at multitasking as lot of people in this thread, though.. I can multitask while programming and feel like I'm doing a great job, but then in retrospect it's clear that my output was maybe 20% of what it would've been if I'd been fully focused
I found that out in college, homework assignments would take 30 minutes at my desk or multiple hours in front of the TV
I think I need to get better about silencing Slack and keeping the web browser closed at work, come to think of it.. It's dang frustrating having to wait 2+ minutes for something to compile and run though..