I listened to both in customs.
They have in my experience different energies, different directions even though the goals aren’t that far apart. With Primal your comfort zone expands, vastly. You know, what’s coming (socially, emotionally) and act forward-looking, intuitively right. Primal feels like a very grounded, smooth operator.
With Daredevil you get the urge to leave the comfort zone. There isn’t much planning ahead, rather (joyfully reckless) experiencing what is coming and handling it in the situation as it unfolds.
Both kill social anxiety but in different ways.
Due to the different directions of the two subs I wouldn’t listen to them at the same time but rather alternating.