"flights to US could include" multi-stop flights. There is a non-stop flight from Singapore to USA i think, leaves airport there and lands here. Multi-stop flights have a stop in EU if they are coming from Asia to USA or they might stop at Japan or something. Eg: Nepal -> HongKong -> Japan -> USA
In which case the ban would apply to the final sector, but for all intents and purposes, passengers boarding at earlier airports would also be prohibited to bring electronics onboard as checking luggage during a flight connection is pretty much unheard of (unless of course it's an overnight stopover).
Your luggage is not with you from the beginning. And the carry on is definitely checked in connecting flights depending on the airport. HK and New Delhi used to have it up to two years ago. Unless they recently changed it.
