Links to terminals at Madrid

Thanks, Linda,
It does LOOK simple!
Karen

Hi Karen,
It's all pretty straightfoward. There is a high speed train which connects T4 to T4S (which is just a satellite of the same terminal) and this runs every 2 minutes.
Have a good trip
Linda

Hello, Gary,
I will arrive at Madrid Barajas at 11:10 on Iberia from Porto. The airport website says that will be Terminal 4. Then I fly at 12:30 on Iberia to London Heathrow from Terminal 4S. I have looked at an airport map. It should be a simple matter, I think, to deplane in 4 and take the underground connecting train to 4S. My luggage should be checked through.
Am I correct on all of this? Anything tricky about it?
Thanks.
Karen