While this thread is from quite a few years ago, the topic you raised about replacing a dishwasher with a washing machine can still be relevant to those considering similar home modifications.
Swapping out a dishwasher for a washing machine involves more than just connecting the plumbing. Dishwashers and washing machines have different water supply and drainage requirements, as you mentioned. Dishwashers typically use smaller hoses, while washing machines require larger ones.
If anyone is still interested in pursuing this change, it's important to consult with professionals like
https://fixappliances.ca/washing-machine-repair/. They can help determine whether your plumbing setup can accommodate the necessary changes, and they can ensure that the water supply, drainage, and connections are properly adjusted to fit a washing machine.