A towing comparison of an F150EV rated 320 miles vs. a Silverado ICE equivalent. 90 miles rated at 320 is an 83% deration vs. 50%. Not sure why they didn't get an F150 ICE. The F150EV predicted 160 mile range, 50% with the 6,000# trailer, a camper with high profile by they get 90 miles. Should give an insight to Rivian towing.
Most EVs don't have as much range as gas-powered vehicles, and towing makes a big impact. How limited is the Lightning's towing range on a single charge?