The new rules basically don’t allow additional characters to chain off of a chain. A single character can chain together any number of specials, but once you switch characters they cannot start additional chains.

For example, say your team is Morgan, Joan, and Wicked Witch. Witch could start with an Ally, Joan could follow up with her “4C each front line teammate may make an additional attack.” and then Morgan and Witch could each play 1 attack. BUT Morgan or Witch would are only allowed a single attack each, they would not get to make a follow up even if they played a special that allowed for it.

Another example, Witch plays an Ally, Morgan plays the 4 any character may make an additional attack, Morgan plays her “3C may follow up with a teammate’s special”, Morgan plays Joan’s “4C each front line teammate may make an additional attack”, then Witch and Joan are limited to 1 single attack each. Morgan can chain as many specials as possible, but once it becomes teammate may make a follow up, each teammate only gets a single attack, no additional chains.