Yes, so many people claim the iPhone cannot multitask and don't know what they are talking about, they mean multi-windowing.Makes sense if you read what the person I replied to said. They talked about having their calculator App open on the same screen as something else (multi-windowing).
Running multiple processes concurrently is the real definition of multitasking.
I've tried this on Android and it's pointless on a slab phone. The screen isn't big enough to make this worthwhile. It'll come with the iPhone Fold next year I'm sure when you open it up.