You can easily go a 3rd level (more) deep by adding another veracrypt file within the hidden partition. You could also use stenography techniques to hide your

You can easily go a 3rd level (more) deep by adding another veracrypt file within the hidden partition. You could also use stenography techniques to hide your encrypted file/data within an image or video. There are also use-cases that don't include a hidden partition, ex: I keep private code repositories in a veracrypt partition to protect them in the event of laptop theft while not avoiding the perf hit of full disk encryption. There's no need for the hidden partition / plausible deniability for a use-case like that.