After having various Bosch machines - 4 years ago we got Miele clothes washer and separate drier - with wifi et al. For all the good engineering put into them.

After having various Bosch machines - 4 years ago we got Miele clothes washer and separate drier - with wifi et al. For all the good engineering put into them... I was at a loss at official way to stack two of them. Which is to buy official "add-on" that goes in between the washer (suggested to be at the bottom) and drier (suggested to be above). Attaching that add-on means drilling/screwing into top plate of the machine that's below, with kit including small (superglue size) silicone to seal those new holes.