10 days ago I traveled from by train from Burgos, Spain to Madrid-Chamartin train station...then on to Madrid-Atocha. There was a great deal of construction at Madrid-Chamartin. As a result, it was confusing to find how to transfer to the train to Madrid-Atocha. Maybe I missed the direct walking route? I ended up exiting the station, walking around it, and reentering it.
The purpose of this post is to encourage those traveling through Madrid-Chamartin this summer to pack some patience.
Want to add that I had a very positive experience on the train journey itself.