No sweat! The world's most versatile vehicle can carry both at the same
time!  At least my '84 Westy (full camper) could, and both were new and
in the box.

If the washer is used be sure to stand it upright on the floor, water
will pour out if you tip it on its side. The dryer should slide in the
back on its side with the seat down.  I can't remember, but I might have
had to tip up the seat part of the bed to fit both.

We should start a new thread about the biggest items we have carried in
our Vanagons!

I have two memorable hauls:  brining home two big recliners, and moving
my daughter home after a year at college.  You would not believe how
much stuff we crammed in that poor beast!