"Darth Vader's bonus turns do not trigger other characters' effects based on bonus turns or Turn Meter gain."
I don't think we have a character in the game right now that gains an effect or does something when any ally or enemy gaining a bonus turn
This would most likely look like
"Everytime ally gains a bonus turn x happens"
Or
"Everytime enemy gains a bonus turn x happens"
So as others have said it is most likely future proofing
JKA/GG bonus turn is not triggered by DV getting a bonus turn, it is triggered by the damage DV does
The TM gain simply means he is getting a bonus turn not a 100% tm gain, though technically they are similar, they are tagged differently. This actually applies to every character that gets a bonus turn or can do a TM swap, they just spelled it out here.
So if SLKR was on the team with DV that means DV should not lose protection and health for his bonus turns same as if facing Rey, inspired LS allies should not be gaining mastery for his bonus turns.
