I continue to mee my min 30 flights on KLm for my gold card, & have done for 15 yrs.
I just returned from Australia, but took MH from Thailand via KUL to AMS, then with a days to be in Amsterdam connect with KLM to LCY.
My bags were checked through all the way, & i double checked with KLM at Schipol. I have not ever had a problem with through connections, or on European short hops in any of these times.
I find Schipol & KLM the most efficient in Europe in Airport or Airline, & if anything does go wrong you find their control flight managers that entirely manage all aspects of one flight, have back up plans & have you informed prior to you ever having to ask.
hence my long established loyalty to them & their impeccable service on ground, lounges, & nothing special in the sky, but reliable helpful & very pleasant to fly always.