I needed a feeding tube for about 6 months following chemo/radiation treatment for tonsilar cancer. While I didn't forget how to swallow, swallowing remains a challenge. You feel like food is going to go down your wind pipe.
I did go in for a "swallowing x-ray" where the radiologist takes a video x-ray of barium laced food (thin liquid, thick liquid, pudding, cookies, and a pill) to see how your throat handles different types of foods. The information I got from that x-ray has given me confidence in eating and swallowing.
Functionally my throat is working fine. The radiation has made the epiglottis more fibrous and stiff so thin liquids and crumbly foods will not make the epiglottis move the food to my stomach and they stick near the wind pipe. Instead of coughing to clear, I need to swallow which isn't a natural response. Now that I know this, I'm able to continue swallowing even though I feel like I need to cough.
Maybe this will help. I also know they have treatment programs to teach swallowing. A good Otolaryngologist will have this capability as part of their practice.