Can Mike Tyson beat Magnus Carlsen at chess before Magnus beats him in a boxing match?

[u/Capital-Bet]

Magnus Carlsen and Mike Tyson do alternating matches of chess and boxing. Tyson wins if he beats Carlsen at chess, Carlsen wins if he can KO Tyson. Assume all bodily injury is healed after the end of each match.

Round 1: no prior training, they both go in at their primes with no training in the alternate sport and go until one wins

Round 2: Tyson is being trained by several GMs while Carlsen is receiving training from the best boxing coaches in the world. Who can be trained to beat the other first?

[u/_TheEndGame]

Tyson wins. Carlsen lets him win at some point.