What is the critical hand placement adjustment needed to successfully apply a rear-naked choke when an opponent has a strong chin tuck?

The critical hand placement adjustment needed to successfully apply a rear-naked choke, a submission hold that restricts blood flow to the brain by compressing the carotid arteries, when an opponent has a strong chin tuck, a defensive posture where they lower their chin to their chest to protect their neck, involves 'threading the needle' with your choking arm. The primary goal is to bypass th....