Why is it difficult to swallow with ear to shoulder (left side) and chin pressing down ward. had test of neck done and had to hold this position. seemed like things being squashed, difficult to swallow in this position. normal swallowing fine?

A study was performed to assess swallowing ease in different positions and your neck position may have added muscle tension. "swallowing while sitting with head/neck flexed was comparatively easier than that in extension position but more difficult than while sitting upright. This could be due to increased muscle tension in this position." https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5636236/