Baby is multitasking???

Sam
I can't seem to find any info on this anywhere but today my 9 month old was playing a game on her iPad and watching cartoons simultaneously. Normally she'll abandon the iPad and I'll end up putting it away but today she was playing a peek a boo game and never missed a beat, and then was looking up at her tv screen and laughing a lot with her favorite parts. 
Is this normal?? After a few minutes of this it felt a little creepy so I went to find info on this and nothing. A post about how kids CANT multitask very well up until three years old but honestly nothing. 
Has anyone's little one under one year old demonstrated this ability? I'm kind of weirded out by it to be honest and I'm worried it's a sign of something "off" instead of "advanced" any help would be great! Thanks!