Till keeps his head straight up and his only real defensive reaction is to pull his head back or try to step out of range. A boxing coach would get him to keep his chin tucked, to be cautious not to leave himself defensively exposed when throwing punches and to bob and weave when his opponent is throwing hooks.
For example, when Till fought Woodley, he made a major error from a boxing perspective. It is a bad idea to lead with a rear uppercut. That punch needs to be carefully set up and it should only be thrown at a certain range. The reason why is that it leaves a fighter open for a lead hook counter where they will almost certainly get dropped. In the Till vs Woodley fight, Till had a southpaw stance and Woodley an orthodox stance. Till throws a few jab feints but his rear hand drops to below his chest. He was already wide open for a cross, right hook or over hand right from Woodley. His decision to lunge in with a kind of rear uppercut, left him even more wide open for a counter and actually created the momentum of his body going into the punch, which allowed for Woodley's counter to cause even more damage. As expected, Woodley threw a counter overhand right and dropped Till with ease and followed it up with a submission once on the ground.
A boxing coach would help him understand how to better anticipate his opponents attacks. For example, dropping the rear hand could possibly be a tactic to bait an opponent into throwing a lead hook. If a boxer can give their opponent certain opportunities for attack, they can try and limit the type of attack they will choose and then be better prepared for a counter. If your opponent drops their rear hand after every cross they throw, then you might want to bait them into throwing a cross so you can counter with a hook. Boxing takes the wild nature of fights and turns them into a chess match.
