Since you have a gen 2 tesla charger, do you have it configured for 80A? I have a gen2 sitting in a box and I've been too lazy/cheap to set it up and buy the 80A teslatap
If you notice in the video the Lightning was in front the whole time. Punching a nice big hole in the air for the Rivian. This test was pretty flawed. I typically like Alex but his whole lightning v rivian series is pretty bad. (See when he said the rivian had better/more practical storage)