Good thing you realized Ari's video was trash.
Escaping the anaconda is sort of similar to escaping the darce, but maybe a bit easier since there's more spots to finish the darce from.
Depending on how they set it up makes a difference. If you're on your knees, already in the grip and you have not been gator rolled, try to keep both of your elbows tight to your sides, expand your chest, and grip the choking arm. Anything to keep that space between your trapped shoulder and your neck open. This will also hopefully make it harder for them to have a strong RNC grip, and it might slide the grip from their palm to their fingers. Then you could pull butterfly or try and pop your head out.
If you've already been rolled and they're walking into you, you need to still try to open your elbow or do whatever you can to keep that space between your trapped shoulder and neck from closing. You can take your trapped arm and try to place the hand against their hip so they can't walk into you as you try to "run away" on your side.
If their hips get close to yours it's going to only get worse. Don't let them tangle up your legs with theirs or step over you, and resist the urge to try and put them in half guard. It'll only help them out. You can also use your free arm that isn't trapped to try and palm strike their locking elbow to pop their grip loose. Jeff Glover got out of a Ryan Hall darce at ADCC by palm striking the elbow to break the RNC grip as Hall was sliding under him. If you can find that video you'll see what I mean. I feel like I'm explaining it bad.
If someone is using their leg like Rafa Mendes to trap your arm down, then I don't know how to escape, and any suggestions would be helpful. Here are a couple videos for reference. I haven't been able to escape this once they start using their leg.
