The Malamute rates 5/5 and is tired by resistance: carting, scootering, canicross, loaded hikes. Heat limits it, so summer sessions move to the cool ends of the day, and walking beside you does very little.
The Dachshund rates 3/5, which surprises people — around an hour a day, ideally with scent work, which tires a hound far more than distance. It is not a sedentary lap dog.
The constraint is what the exercise looks like. Repeated jumping on and off furniture, long flights of stairs and high-impact landings are hard on a chondrodystrophic spine, so mileage should be flat and steady rather than acrobatic.
The apartment ratings follow: 5/5 against 1/5. A Dachshund is a genuinely workable flat dog provided the noise and the solitude are managed; a Malamute is not, on size and output together.
On coat the Dachshund is far easier at 2/5 grooming and 2/5 shedding, with the wirehaired variety needing stripping and the longhaired needing brushing through its feathering. The Malamute needs an undercoat rake and several long sessions twice a year and should never be clipped.