As noted earlier, an additional rule was added in at the final stages of the tournament to help prevent stalemates. This rule was in effect in the Final:
One player attacks and the other defends in battle 1. The players then swap roles for battle 2. Battle 3 has no attacker/defender, but players are not permitted to sit still for more than 5 minutes. Minor/superficial unit movements are not sufficient to qualify as not sitting still.
Video commentaries of some of these matches can be found in the Org Media Library. Many thanks to AzureCuzYeah and jackie_fish for creating the commentaries. You can see more of their superb TWS2 commentaries at AzureTotalWar and jackie_fish's YouTube channel.