How does Trinity work?

Baseline atonement healing transfer is 55%. When choosing Trinity as a PvP Talent, which states it increases atonement transfer by 20 (I imagine % even if it just says 20 with no unit), it makes it 63,5%.

Can anyone explain the math to me?

Im pretty sure it just makes atonement last 30 secs, and only applicable by PWS. Also the damage bonus if you have Atonement on 3 or more people.

No, there is also a part that says “healing transfer increased by 20”.

Huh… you’re right. Surprised I never noticed that.

Doing some quick target dummy action, it does seem to increase atonement healing, but not by 20%… My math had it increasing by 28.5%.

So yeah, no clue!