Combo Bonuses are bonuses that are determined by hit count and have varying types.
Combo Bonuses occur every 50 hits and are split into different types such as damage amount increase, Voltage Gauge bonus, Action Count increase, and Result bonus. The combo count increases when a Battle Member preforms consecutive actions.
Because the count is interrupted when a MAD's turn occurs in between, you should use Takt's Pursuit to cause Turn Delay and adjust the turn order. Additionally, utilizing Harmonics also makes it easier to chain attacks for bonuses.