Transfer between flights at AMS
 

So I have a one hour time between two flights at AMS. KLM arrives from Asia at AMS and then I take a Delta 143 to USA. I am doubting now that maybe one hour will not be enough to get to the other flight (walk to gates, immigration (?) and such).

Has anyone gone through this? Thanks.

if flights are on-time, this is no problem at all.

Indeed. And assuming you have one PNR, KLM should protect you.

There is not only immigration, but also as it's delta/klm, the questionning at the entrace of the D jetty. They are usually quick though.
So in my opinion do-abe but don't lose time shopping ;-)