Whip heavy whipping cream until peaks form.
Fold in sweetened condensed milk.
Transfer half of mixture to a freezer-safe container that has a lid.
Stir hot fudge topping until nice and loose. Avoid heating the topping unless necessary and then allow to cool before using.
Drizzle one-quarter cup of hot fudge topping and one-quarter cup of caramel topping on top of ice cream mixture.
Sprinkle on half of the brownie chunks.
Carefully pour the last half of the ice cream mixture into container.
Drizzle remaining caramel and hot fudge topping on top and sprinkle with remaining brownie pieces.
Use a knife to swirl into ice cream.
Place lid on container and freeze until it reaches ice cream consistency.
Serve ice cream topped with additional hot fudge topping, caramel topping and chopped pecans if desired.