A way to understand non verbal hypnosis is also the role of tactile stimulations. A technique that is used is called magnetic passes and the hand goes very near the body but doesnt touch the body.

In polyvagal terms touch can link to stimulation of the ventral vagus.

In a study of hospitalized cardiovascular patients (Weiss, 1990). Patients were given a standardized protocol of touch that included structured periods of different tactile stimuli in the form of physical assessment procedures and massage. Their heart rate and blood pressure were monitored throughout the 16-minute protocol. Both blood pressure and heart rate decreased as a result of touch (SOURCE The Handbook of Touch: Neuroscience, Behavioral, and Health Perspectives (posizioni nel Kindle 4613-4615). Springer Publishing Company.

In fact the ventral vagus is also about connection, and touch universally signifies a deep connection among humans, offering solace and expressing affection across all ages, from newborns to the elderly. It lays the foundation for human closeness, bringing forth sensations of comfort and warmth that are essential for nurturing relationships (Andersen, 2008; Andersen & Guerrero, 1998; Floyd, 2006; Montagu, 1978). 

It's a vital element in the essence of human intimacy (Andersen, 2008; Andersen, Guerrero, & Jones, 2006; Prager, 1995), embodied in the idea of nonverbal immediacy (Andersen, 1985, 2008; Andersen, Hecht, Hoobler, & Smallwood, 2002; Andersen & Wang, 2006), and crucial to the concept of interpersonal affection (Floyd, 1997, 2000, 2006). 

Even in cultures where touch is less common, the expression of intimacy within families, between romantic partners, and among close friends is prevalent. Intriguingly, this tactile connection might even have a chemical underpinning, as studies suggest that it triggers the release of oxytocin (Floyd, 2006; Floyd, Mikkleson, & Hesse, 2007; Morhenn, Park, Piper, & Zak, 2008), a hormone associated with the warmth and bonding experienced in close relationships.
Building on the work of Meaney and his team (Francis, Champagne, & Meaney, 2000), which linked maternal care behaviors like licking and grooming to variations in offspring's brain oxytocin levels, a recent research reveals a similar pattern in humans. the research discovered that oxytocin levels rose following playful interactions with their infants in mothers who frequently engaged in affectionate touch (over two-thirds of the interaction time), unlike in mothers who used affectionate touch sparingly. Among fathers, those who engaged in lively, stimulating contact saw an increase in oxytocin, aligning with observations in fathers actively involved in caregiving (Feldman, Gordon, et al., 2010). This suggests that the characteristic ways parents touch—tenderly by mothers and more playfully by fathers—play a role in the baseline levels of oxytocin and its surge after engaging with their children.